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Confessions of a Real-Life Entrepremer!
Professional mermaid Linden Wolbert, once dubbed “Mermaid to the Stars,” shares her personal journey from master diver into the watery world of mermaiding and exactly how she came by her tail. From edu-taining kids through mer-formances and her video series, “Mermaid Minute,” to her commercial film and photography work—did I mention Hollywood parties?—Mermaid Linden exemplifies the aquatic life well-finned. As a bonus, Vancouver’s Nerdmaid Faith offers a spe-shell mermaid resource guide. It’s enough to make you want to shake a tail (feather)!

by Linden Wolbert
Header image by Agustin Munoz
Predive Click: “Ocean Eyes,” Billie Eilish 🎶🎶
DISCLAIMER: The following passage is likely fraught with bad ocean puns. I can’t kelp it. Over the years, I’ve steadily amassed a rather over-whale-ming “Mernacular,” consisting of ridiculous, nonsensical and sometimes painfully cheesy “mermisms” and invented words. You’ve been warned, my fine-finned friend! If you dare, read on! Okay. Now where to start? Oh yes. Childhood.
When I was little, never in a million years could I have fathomed I’d become a mythical creature for a living. A half-fish, half woman, freediving globe-trotter? Nope. Dolphin-itely wouldn’t have guessed this career path. Growing up in Amish Country Pennsylvania, and like many kids in various regions of rural America in the early 80’s, we didn’t have cable television at my house for quite some time. PBS, therefore, was my go-to selection from the three channel options we had, outside of reading books and sitting in the yard watching bugs and birds with my binoculars and a magnifying glass.
Marty Stauffer and Jacques Yves Cousteau were two of my favorite “television teachers,” but my absolute favorite was (and still is) Sir David Attenborough. In my mind, he narrates my life! It’s far more interesting to watch an ant walk by, say, on the kitchen counter carrying a crumb, with Sir David’s unmistakable voice giving a thoughtful play-by-play on the whole scene, even if just in your imagination. You should try it. Super fun.
Not exactly a stone’s throw away from where I grew up, the Atlantic seemed pretty far out of reach. Embarking to see the ocean once or twice a year (if I was lucky) generally entailed something like the following: Very little sleep the night before in anticipation of a multiple-hour car ride with my parents and sister, followed by excitedly peering out the back window of the car for signs of the sea. Over the course of a few hours, the scenery would slowly morph. Cow pastures and corn fields gave way to highways and toll roads, then gradually to marshes, bridges and finally sand dunes. The best part was rolling down the car windows and smelling the sea for the first time on approach. Deep inhale….ahhhhh! The best! A colorful array of carnival rides would peek over the horizon, towering over the boardwalk like a toy model in the distance. Then there was the smell of the boardwalk: hot tar in the sun, french fries and deep-fried funnel cake punctuated with brine, salt and sunscreen. I get giddy just thinking about it!

In summer, my family would occasionally have a vacation in New Jersey or Maryland at the beach, which to me, was the stuff of dreams. Being anywhere near the ocean made me completely lose my little mind. I perceived the sea then (as I still do today) as a place of slow-motion beauty and mystery waiting to be revealed. A place where fantastical creatures frolic through the waves, tucking themselves away silently behind sea fans, rocks and corals to hide from predators and unexpected visitors. Tide pools were treasure box portals full of infinite possibilities—like little windows offering a teaser of what lay below in the fathoms. Sea anemones, small fish, mussels, clams, and the occasional horseshoe crab delighted me to no end.
Mermaid’s purses (skate and shark egg cases) were my favorite prize to collect from the shoreline. I would sit, entranced, watching the bubbles surface in the tidal zone after waves passed over the sand in retreat back to the sea. This was evidence of little critters digging their way to safety from cackling gulls and the plovers who’d run across the sand like adorable wind-up toys in formation. After body surfing until we were exhausted, my sister would cover me in a pile of damp sand, carving out the form of a mermaid tail around my legs as I lay beneath the cool weight of my new encasement. I’d sit there with a huge smile across my face, somehow comfortable in my temporary sandy cocoon of immobilization, until I had an itch on my nose. In my wildest dreams, I never imagined that my sand tail would one day be replaced by a beautifully crafted, prosthetic mer-sterpiece created by a Hollywood spe-shell effects artist, but I suppose stranger things have happened.
Taking The Plunge
So how did I go from the aforementioned sea squirt, to becoming a professional mermaid, you ask? Sure, I’d been to the Jersey shore in the summers. I loved to swim, a family trait. I loved taking photos, and capturing little things I’d see in nature. These passions evolved into the realization that I wanted to become a wildlife cinematographer and to share these things I loved so much, just as Cousteau and Attenborough had done for me. I also thought, “What better place to work than in nature and the outdoors?!” And so it was.
In 2000, I began my undergrad at Emerson College in Boston and majored in film and environmental science. I worked as an RA (mother hen in the dorm), repaired old 16mm film cameras called Bolexes in the basement of the school, and ran a jumbotron camera at the local concert stadiums to help pay for my tuition. I made my first underwater 16mm film on a Bolex I placed inside a fish aquarium, and filmed it at the local Chinatown YMCA swimming pool. I was beside myself with excitement when the film was processed and there was actually an image! In 2003, I left Boston for Los Angeles and enrolled in the Emerson College Los Angeles Internship Program. I haven’t left since.
I was hired as the Residence Director immediately upon graduation—which, unbeknownst to me, would be the last “real job” I would have to date. Before I left Emerson in 2004, I got my PADI Open Water certification and was practically inseparable from the water. I could hardly bear to be in an office once I experienced the kelp forests first hand and then traveled to Grand Cayman to help film a documentary about the sport of freediving. Again, my love of the water grew.
While in Cayman, I tried a monofin for the first time, thanks to Canadian World Champion Mandy-Rae Cruickshank, and the rest is history! At that moment, a huge light bulb went off. What if, instead of creating documentaries like everyone else, I taught kids about the ocean as a MERMAID? And just like that, I made my first big leap. I left my very comfortable position at Emerson to start my business. Suddenly, in my early 20’s, I found myself living in a room above the garage at my parents’ house. No promise of work and no idea how this would all pan out. It was liberating and horrifying all at once. As I would learn, when I take a leap, a net magically appears. The saying is true! Never, of course, in a way I could have predicted.

The PADI training agency hired me as an underwater SCUBA model, and I traveled the world and got paid to dive with them. A dream! Around that time, I traveled to Tokyo and became certified as an International AIDA Judge for the sport of freediving. I was obsessed with the sport, yet had no interest in competing, so this was perfect. I got to observe world class athletes setting unimaginable records, travel to exotic locations, and master my freediving techniques from the best possible coaches. Life news flash: Toto, I don’t think we’re in Amish country anymore.
Suddenly, I was a first-time business owner with an idea for which there was no existing business model. It was a huge learning curve. Here are some of the skill sets and areas I have had to do my best to learn and manage over the past decade to keep my mermaid business flourishing: Performer, Filmmaker, Special Effects Artist, Product Designer, Model, Quality Controller, Makeup Artist, Negotiator, Accountant, Seamstress, Educator, Musical Composer, Editor, Aquatic Athlete, Web Designer, Childhood Behavioral Expert, Set Designer, Social Media Expert, Storyteller, Wish Granter, Marine Biologist, Citizen Scientist, Writer, Conservationist, PR Specialist, Brand Ambassador, Producer, Underwater Stunt Double, Director, Professional Mermaid, andI’m certain I’m missing something, but….you get the picture. Needless to say, I have acquired quite the hat collection.
This job has taught me more than any office position ever could have and has provided infinite rewards! Is it horrifying at times, both creatively and financially? Absolutely! Do I have days where I question myself and wonder, “Am I completely mad for doing all this?” Bloody right I do! But then I realized what happened;somewhere along the line, I accidentally became an Entrepremermaid. Yes, it’s a thing—Entrepremermaiding. Okay, so I made it up. Now I cannot imagine living life any other way.
Quite a Tail to Tell

My very first tail, or as it is now called, “Tail 1.0,” weighed 35 pounds/16 kg by the time it was completed. Its replica, known as “tail 2.0” and my current work (sea) horse, weighs in at just shy of 50 pounds, but is neutrally buoyant (it neither sinks nor floats). Craziness, I know. The sea stars aligned when I decided I must make my first tail. Magically, a man by the name of Allan Holt was delivered into my sphere of existence thanks to our mutual friend Adam. Allan wanted to make an underwater music video, and Adam suggested he speak with me about the logistics. I had no idea until our first meeting over dinner, when Allan and I sat down to discuss his music video, that he was a Hollywood special effects artist. He also happens to be one of the kindest people I know. He immediately expressed interest in helping me with my crazy dream: to create a realistic, swimmable, one-of-a-kind mermaid tail. Within a few months, we began the process.



It all started with a fiberglass mold of my body from the waist down, to make a duplicate of my legs. On top of my new, “fake legs,” we then took over 30 pounds of sculpting clay and began hand-sculpting each individual scale. The design of the tail fluke was next, which I had decided would be in the shape of a crescent. Why? Well, I had thought long and hard about how I wanted my tail to look. When I thought of traditional mermaid tails, I envisioned a dolphin-shaped fluke, or something similar to that of a whale tail. Deciding on a crescent shape was two-fold for me. First of all, I wanted to be unique. The shape should be something that, even if you only saw the silhouette of it from underwater, you’d know, “that’s Mermaid Linden.”
Secondly, the fastest fish in the world have flukes that are similar to that shape….think: sharks, sailfish, swordfish, tuna, etc. I used a method which has since been coined as “biomimicry,” which means to be inspired by something in nature to make it function well for human use. Well, in this case, it was for mermaid use! And thank Poseidon, it worked.
Over seven months and several thousand “sand dollars” later, we co-created my first born—my baby—Tail 1.0! After hundreds (or perhaps thousands?) of hours of clay sculpting, fiberglass-laying, bondo-slathering labor and love, that tail lasted me for almost a decade and swam in oceans, rivers, lochs, and pools around the world. It is amazing where that tail got to swim, and luckily for me, I got to experience those things because of it. Not only was this tail beautiful, sleek, and fitted perfectly to my form, it was unique. It was FAST. When I took it in the water, divers and strong swimmers with fins even had trouble keeping up. I learned quickly that unless we were filming something to demonstrate speed, I needed to intentionally slooooooow doooooown in this piece of fancy diving equipment. I’d call the Tail 1.0 a complete success! Since then, we have created two other tails from that same fiberglass mold. Tail 2.0, which is my current go-to silicone tail. Tail 3.0, which is made of a lightweight foam latex material, is a replica of its silicone siblings, and is intended strictly for land use and terrestrial performances.

Before tail 1.0 was even complete, I had begun getting bookings and “merformance” inquiries through word of mouth, thanks to people being aware that I was constructing a tail for almost a year. Here in Los Angeles, people love to have something at their party or event that nobody else has ever had. In the early 2000’s, nobody had heard of live mermaid performers for parties who actually swam. Sure, there were Ariel impersonators in long, green sequin skirts, but folks could scarcely believe there was some woman in her 20’s—a freediver—who donned a 35-pound silicone prosthetic tail and either taught your kids about the ocean during their birthday pool party, or swam as the centerpiece of your exclusive evening soiree in Beverly Hills with your celebrity friends. One party led to 10 others, and my client list became rather star-studded, rather quickly.
One publication eventually deemed me, “The Mermaid to the Stars,” because so many of my clients were A-listers or on the silver screen, big-name directors or a big shot in the music or fashion industries. This was all rather unexpected to the girl from Amish Country. When I started this whole idea, the motivation for me was to teach children about our oceans, their inhabitants, and how important ocean conservation is. Little did I know I would additionally find myself in so many unexpected and unusual booking/ performance scenarios.

Some of my “merformances” have included: Underwater Ring Bearer at a SCUBA wedding in La Jolla Cove, weekly swim playdate mermaid for the who’s who’s children of Hollywood, underwater stunt woman for various commercials, films and music videos, cameo mermaid performer in feature films, mermaid trainer for “Dive Bar” up in Sacramento, CA, among others, official Mermaid “Edutainer” at the world’s largest fair, the LA County Fair, with my own stage, big screen, and shell throne . . . it goes on and on. Let it be known that while I am absolutely a people person, I love working with kids the most. And this brings me to, fins down, my favorite type of booking: Wishes.
When the Make-A-Wish Foundation first contacted me over a decade ago, I could barely get through all the nights and days until I’d get to meet the little girl who had made her mermaid wish known to the “Wish Fairies” who subsequently contacted me. This particular child wished to meet a mermaid, and then go to the Bahamas with her very own mermaid tail, so she could swim like a mermaid, too. After this first wish experience, I felt a sense of full-heartedness which was previously unmatched. I’m now convinced there is nothing quite like seeing a child’s face light up who has been through treatments and life-threatening circumstances for months, or sometimes years until that very moment. And, in that mer-ment, they forget all of that—the pain, the discomfort, the fluorescent-lighting of their hospital room, feeding tubes and blood tests—and they find themselves in a sort of suspended dream.
Photo by Bloomberg Businessweek
As a highly empathic person, being part of that experience in any small capacity is life-rendering. Dozens of wishes later, I never could have dreamed I would be performing a wish for my very own family. Reese, now 13, is my one and only niece. She has been battling leukemia since age 7, and at the time of my writing this, is about to undergo a bone marrow transplant. Knowing now from first-hand experience how hard it is on the kids themselves, as well as the families of ill children, to go through these types of circumstances, makes it even more important to help fulfill these wishes. I know how they feel. So while my true passion is creating Ocean Edutainment for kids, I can say with absolute certainty that participating in Wishes is the most fulfilling, perspective-giving facet of my work as a mermaid.
In A Mermaid Minute
Speaking of wishes, as luck would have it, while in the shower one day, I dreamed up what I thought was a brilliant idea for a children’s Ocean Educational series. It seems when I wash my hair and massage my brain (coral), it gives me great ideas in reciprocation—how kind of it! It was a simple premise: Each episode would be one minute about a topic in the oceans: an animal, phenomenon, or habitat. I would title this action-packed 60 seconds of ocean magic, Mermaid Minute!
With zero budget, equipped only with sheer determination and unabashed passion for sharing the beauty of our oceans with my “little sea fans,” I managed to scrape together my first season of Mermaid Minute and post it on YouTube thanks to the help of some wonderful friends and family. I borrowed some lighting equipment, tripod, microphone and an HD video camera (which at this point was still on painstakingly annoying Mini-DV tapes) and purchased a heap of green felt from the fabric store to create a makeshift green screen to post in front of in my tail so I appeared to be sitting on the “beach.”

Remember, I’d quit my one and only full-time job after college to pursue my mermaid career and moved into the room above the garage at my parents’ house as an adult child to start my mermaid business. It was the best thing I ever did! But yeah, not exactly the easiest thing as a grown adult. My neighbor helped me fine-tune my non-linear editing skills on Final Cut Pro, and I was off to the races. Over a decade later, Mermaid Minute has millions of views from all around the world, and season 2 overfunded on Kickstarter. Teachers began reaching out and using it in classrooms, and parents of homeschooling students employed it in their lessons. Friends with kids all told me how their children loved it, and to this day, it is the thing I am most proud of ever creating. All of my skills and passions are encompassed in it: Storytelling, cinematography, beautiful underwater footage, animals, science, natural history, music, sound effects, humor, and INSPIRING KIDS! What a joy it is when I complete editing an episode and post it up on YouTube!
About a decade ago, mainly because of Mermaid Minute’s success, I became involved with the Reef Check Foundation, an organization which has trained thousands of volunteer citizen scientists to count and track the changes of keystone species on coral and rocky reefs around the world. I had initially heard of Reef Check through a Howard and Michele Hall documentary I loved, “Coral Reef Adventure,” and was delighted when Reef Check contacted me. This eventually led to a position as a board member, and today I serve as the Co-Chair of the Board.
Through the years working with Reef Check, I have met some truly amazing people who are like-minded in the world of ocean conservation, diving, and exploring our seven seas. Russ Lesser, the long-time former president of Body Glove, was one of those people. Thanks to Russ, I began a partnership with Body Glove in 2013 which led to an amazing opportunity: designing my own signature line of mermaid-inspired swim products for kids and adults. Yet another feather in the cap—er—scale on the tail of my Entrepremermaiding journey, I learned all about manufacturing, product design, prototype testing, marketing, and even inventing.

I am so grateful and lucky that Russ saw such potential in me and my little brand. He said that the thing that really sold him on it all was my Mermaid Minute series. This meant the world to me! Since the inception of the Mermaid Linden by Body Glove line, our products have been sold in some of the world’s largest retailers, and our monofins are top-rated in their category of aquatics. I dreamed up the world’s first foldable monofin, which came to market last summer. Seeing kids, and now adults, around the world experiencing swimming with a monofin for the first time with my signature crescent fluke design makes me pinch myself.
“How exactly did this all happen?” I sometimes ask myself this question. One could say the sea stars aligned for me time and time again, but I know how many challenges I’ve faced. Anyone who has tried their hand at self-employment in a creative space knows it isn’t easy. Back in the early days of my mermaiding career, I was the only one in Los Angeles doing what I did. Over time, tail makers started popping up. Other men and women saw that this could be a viable career, side hustle or a fun hobby, and other performance companies and solo “mers” began appearing online in social media pages and forums by the hundreds. A noticeable upward tick in the trend of mermaids in pop culture became very apparent.
Photo by Courtney Pearson
Nobody is really sure where or why this happened, but within the span of a few years, mermaids were the new unicorns in the world of mythical trending. Mermaid mugs, greeting cards, t-shirts, and other mer-related chachki became commonplace in stores across the country, and soon the world. Instagram exploded with new profiles and accounts of “Mermaid (insert name),” and “Merman (insert another name),” with people showing off their newest monofins, shell tops, tails, and “mersonas” (mermaid or merman persona). Scores of others bought tails, created websites, and suddenly mermaids were popping up like mushrooms, vying for the same bookings and gigs in all corners of the world.
Before you knew it, Mermaid Conventions became a thing! The mermaid trend had arrived, and it still shows no sign of slowing down. Sales and projected trends for mermaid tails and accessories continue to rise. Even the SCUBA and Freediving world caught the wave at last, with several training agencies now offering Mermaid Specialty courses, where men and women can learn everything from proper movement in a tail, to breath hold techniques, to finding your “mersona.”

It has been astounding watching the “Mermaid Economy” blossom since it all began for me in the early 2000’s. I remember looking all over for any clue on how to design a mermaid tail back then online, and there was zilch. Now you can find all manner of tails, from lightweight fabric tails to heavy silicone custom tails like my own. Extra flukes and fins? You’ve got it! Companies like Mertailor, FinFolk Productions, Merbella Studios and countless others create extraordinarily beautiful tails in all forms, budgets, and colors. Some even light up! The future of mermaiding is bright, and it’s also neat that nowadays, when I tell people my job title, they don’t always look at me like I have an octopus tentacle growing out of my forehead anymore. “Oh yeeeeah! I have a friend who’s a mermaid, too!” is the common response now.
What a cool time to be a mermaid!
Dive Deeper
Mermaid Linden’s YouTube Channel
Mermaid Linden’s Mermaid Minute
The Diver Medic Webinar: Linden Wolbert – How Edutainment plants seeds of Hope
DeeperBlue.com Podcast

With a BA in Film and Science (underwater cinematography) from Emerson College in Boston, Linden shares the life aquatic with others via underwater wildlife videos and live mermaid performances. Mermaid Minute, her educational ocean web series for kids, “edutains” young viewers about an array of animals and sea life. Her passion is reaching as many children as possible with her message of conservation, education and exploration thereby transforming them into our world’s youngest ocean ambassadors. As a PADI Master Scuba Diver, underwater model and full-time professional mermaid through her company, Mermaids in Motion LLC, Linden would spend all of her time in the water if her hands didn’t get so pruny! A long time International AIDA Freediving Judge, she has traveled the globe to officiate world records that span far beneath the ocean’s surface. Linden serves as Co-Chair of the board of Reef Check Foundation, a co-host of the Webby Award-winning Deeperblue Podcast, and a Volunteer Mermaid for the Make-A-Wish Foundation.
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Twenty-five Years in the Pursuit of Excellence – The Evolution and Future of GUE
Founder and president Jarrod Jablonski describes his more than a quarter of a century long quest to promote excellence in technical diving.

by Jarrod Jablonski. Images courtesy of J. Jablonski and GUE unless noted.
The most difficult challenges we confront in our lives are the most formative and are instrumental in shaping the person we become. When I founded Global Underwater Explorers (GUE), the younger version of myself could not have foreseen all the challenges I would face, but equally true is that he would not have known the joy, the cherished relationships, the sense of purpose, the rich adventures, the humbling expressions of appreciation from those impacted, or the satisfaction of seeing the organization evolve and reshape our industry. Many kindred souls and extraordinary events have shaped these last 25 years, and an annotated chronology of GUE is included in this issue of InDEPTH. This timeline, however, will fail to capture the heart behind the creation of GUE, it will miss the passionate determination currently directing GUE, or the committed dedication ready to guide the next 25 years.

I don’t remember a time that I was not in, around, and under the water. Having learned to swim before I could walk, my mother helped infuse a deep connection to the aquatic world. I was scuba certified in South Florida with my father, and promptly took all our gear to North Florida where I became a dive instructor at the University of Florida. It was then that I began my infatuation with cave diving. I was in the perfect place for it, and my insatiable curiosity was multiplied while exploring new environments. I found myself with a strong desire to visit unique and hard-to-reach places, be they far inside a cave or deep within the ocean.
My enthusiasm for learning was pressed into service as an educator, and I became enamored with sharing these special environments. Along with this desire to share the beauty and uniqueness of underwater caves was a focused wish to assist people in acquiring the skills I could see they needed to support their personal diving goals. It could be said that these early experiences were the seeds that would germinate, grow, mature, and bloom into the organizing principles for GUE.



The Pre-GUE Years
Before jumping into the formational days of GUE, allow me to help you visualize the environment that was the incubator for the idea that became GUE’s reality. By the mid-1990s, I was deeply involved in a variety of exploration activities and had been striving to refine my own teaching capacity alongside this growing obsession for exploratory diving. While teaching my open water students, I was in the habit of practicing to refine my own trim and buoyancy, noticing that the students quickly progressed and were mostly able to copy my position in the water. Rather than jump immediately into the skills that were prescribed, I started to take more time to refine their comfort and general competency. This subtle shift made a world of difference in the training outcomes, creating impressive divers with only slightly more time and a shift in focus. In fact, the local dive boats would often stare in disbelief when told these divers were freshly certified, saying they looked better than most open water instructors!
By this point in my career, I could see the problems I was confronting were more systemic and less individualistic. In retrospect, it seemed obvious that key principles had been missing in both my recreational and technical education, not to mention the instructor training I received. The lack of basic skill refinement seemed to occur at all levels of training, from the beginner to the advanced diver. Core skills like buoyancy or in-water control were mainly left for divers to figure out on their own and almost nobody had a meaningful emphasis on efficient movement in the water. It was nearly unheard of to fail people in scuba diving, and even delaying certification for people with weak skills was very unusual. This remains all too common to this day, but I believe GUE has shifted the focus in important ways, encouraging people to think of certification more as a process and less as a right granted to them because they paid for training.

The weakness in skill refinement during dive training was further amplified by little-to-no training in how to handle problems when they developed while diving, as they always do. In those days, even technical/cave training had very little in the way of realistic training in problem resolution. The rare practice of failures was deeply disconnected from reality. For example, there was almost no realistic scenario training for things like a failed regulator or light. What little practice there was wasn’t integrated into the actual dive and seemed largely useless in preparing for real problems. I began testing some of my students with mock equipment failures, and I was shocked at how poorly even the best students performed. They were able to quickly develop the needed skills, but seeing how badly most handled their first attempts left me troubled about the response of most certified divers should they experience problems while diving, as they inevitably would.
Diving Fatalities
Meanwhile, I was surrounded by a continual progression of diving fatalities, and most appeared entirely preventable. The loss of dear friends and close associates had a deep impact on my view of dive training and especially on the procedures being emphasized at that time within the community. The industry, in those early days, was wholly focused on deep air and solo diving. However, alarmingly lacking were clear bottle marking or gas switching protocols. It seemed to me to be no coincidence that diver after diver lost their lives simply because they breathed the wrong bottle at depth. Many others died mysteriously during solo dives or while deep diving with air.
One of the more impactful fatalities was Bob McGuire, who was a drill sergeant, friend, and occasional dive buddy. He was normally very careful and focused. One day a small problem with one regulator caused him to switch regulators before getting in the water. He was using a system that used color-coded regulators to identify the gas breathed. When switching the broken regulator, he either did not remember or did not have an appropriately colored regulator. This small mistake cost him his life. I clearly remember turning that one around in my head quite a bit. Something that trivial should not result in the loss of a life.
Also disturbing was the double fatality of good friends, Chris and Chrissy Rouse, who lost their lives while diving a German U-boat in 70 m/230 ft of water off the coast of New Jersey. I remember, as if the conversation with Chris were yesterday, asking him not to use air and even offering to support the cost as a counter to his argument about the cost of helium. And the tragedies continued: The loss of one of my closest friends Sherwood Schille, the death of my friend Steve Berman who lived next to me and with whom I had dived hundreds of times, the shock of losing pioneering explorer Sheck Exley, the regular stream of tech divers, and the half dozen body recoveries I made over only a couple years, which not only saddened me greatly, but also made me angry. Clearly, a radically different approach was needed.
Learning to Explore
Meanwhile, my own exploration activities were expanding rapidly. Our teams were seeking every opportunity to grow their capability while reducing unnecessary risk. To that end, we ceased deep air diving and instituted a series of common protocols with standardized equipment configurations, both of which showed great promise in expanding safety, efficiency, and comfort. We got a lot of things wrong and experienced enough near misses to keep us sharp and in search of continual improvement.

But we looked carefully at every aspect of our diving, seeking ways to advance safety, efficiency, and all-around competency while focusing plenty of attention into the uncommon practice of large-scale, team diving, utilizing setup dives, safety divers, and inwater support. We developed diver propulsion vehicle (DPV) towing techniques, which is something that had not been done previously. We mostly ignored and then rewrote CNS oxygen toxicity calculations, developed novel strategies for calculating decompression time, and created and refined standard procedures for everything from bottle switching to equipment configurations. Many of these developments arose from simple necessity. There were no available decompression programs and no decompression tables available for the dives we were doing. Commonly used calculations designed to reduce the risk of oxygen toxicity were useless to our teams, because even our more casual dives were 10, 20, or even 30 times the allowable limit. The industry today takes most of this for granted, but in the early days of technical diving, we had very few tools, save a deep motivation to go where no one had gone before.

Many of these adventures included friends in the Woodville Karst Plain Project (WKPP), where I refined policies within the team and most directly with longtime dive buddy George Irvine. This “Doing it Right” (DIR) approach sought to create a more expansive system than Hogarthian diving, which itself had been born in the early years of the WKPP and was named after William Hogarth Main, a friend and frequent dive buddy of the time. By this point, I had been writing about and expanding upon Hogarthian diving for many years. More and more of the ideas we wanted to develop were not Bill Main’s priorities and lumping them into his namesake became impractical, especially given all the debate within the community over what was and was not Hogarthian.
A similar move from DIR occurred some years later when GUE stepped away from the circular debates that sought to explain DIR and embraced a GUE configuration with standard protocols, something entirely within our scope to define.
These accumulating events reached critical mass in 1998. I had experienced strong resistance to any form of standardization, even having been asked to join a special meeting of the board of directors (BOD) for a prominent cave diving agency. Their intention was to discourage me from using any form of standard configuration, claiming that students should be allowed to do whatever they “felt’ was best. It was disconcerting for me, as a young instructor, to be challenged by pioneers in the sport; nevertheless, I couldn’t agree with the edict that someone who was doing something for the first time should be tasked with determining how it should be done.
This sort of discussion was common, but the final straw occurred when I was approached by the head of a technical diving agency, an organization for which I had taught for many years. I was informed that he considered it a violation of standards not to teach air to a depth of at least 57 m/190 ft. This same individual told me that I had to stop using MOD bottle markings and fall in line with the other practices endorsed by his agency. Push had finally come to shove, and I set out to legitimize the training methods and dive protocols that had been incubating in my mind and refined with our teams over the previous decade. Years of trial and many errors while operating in dynamic and challenging environments were helping us to identify what practices were most successful in support of excellence, safety, and enjoyment.
Forming GUE
Forming GUE as a non-profit company was intended to neutralize the profit motivations that appeared to plague other agencies. We hoped to remove the incentive to train—and certify—the greatest number of divers as quickly as possible because it seemed at odds with ensuring comfortable and capable divers. The absence of a profit motive complemented the aspirational plans that longtime friend Todd Kincaid and I had dreamed of. We imagined a global organization that would facilitate the efforts of underwater explorers while supporting scientific research and conservation initiatives.
I hoped to create an agency that placed most of the revenue in the hands of fully engaged and enthusiastic instructors, allowing them the chance to earn a good living and become professionals who might stay within the industry over many years. Of course, that required forgoing the personal benefit of ownership and reduced the revenue available to the agency, braking its growth and complicating expansion plans. This not only slowed growth but provided huge challenges in developing a proper support network while creating the agency I envisioned. There were years of stressful days and nights because of the need to forgo compensation and the deep dependance upon generous volunteers who had to fit GUE into their busy lives. If it were not for these individuals and our loyal members, we would likely never have been successful. Volunteer support and GUE membership have been and remain critical to the growing success of our agency. If you are now or have ever been a volunteer or GUE member, your contribution is a significant part of our success, and we thank you.

The challenges of the early years gave way to steady progress—always slower than desired, with ups and downs, but progress, nonetheless. Some challenges were not obvious at the outset. For example, many regions around the world were very poorly developed in technical diving. Agencies intent on growth seemed to ignore that problem, choosing whoever was available, and regardless of their experience in the discipline, they would soon be teaching.
This decision to promote people with limited experience became especially problematic when it came to Instructor Trainers. People with almost no experience in something like trimix diving were qualifying trimix instructors. Watching this play out in agency after agency, and on continent after continent, was a troubling affair. Conversely, it took many years for GUE to develop and train people of appropriate experience, especially when looking to critical roles, including high-level tech and instructor trainers. At the same time, GUE’s efforts shaped the industry in no small fashion as agencies began to model their programs after GUE’s training protocols. Initially, having insisted that nobody would take something like Fundamentals, every agency followed suit in developing their own version of these programs, usually taught by divers that had followed GUE training.
This evolving trend wasn’t without complexity but was largely a positive outcome. Agencies soon focused on fundamental skills, incorporated some form of problem-resolution training, adhered to GUE bottle and gas switching protocols, reduced insistence on deep air, and started talking more about developing skilled divers, among other changes. This evolution was significant when compared to the days of arguing about why a person could not learn to use trimix until they were good while diving deep on air.
To be sure, a good share of these changes was more about maintaining business relevance than making substantive improvements. The changes themselves were often more style than substance, lacking objective performance standards and the appropriate retraining of instructors. Despite these weaknesses, they remain positive developments. Talking about something is an important first step and, in all cases, it makes room for strong instructors in any given agency to practice what is being preached. In fact, these evolving trends have allowed GUE to now push further in the effort to create skilled and experienced divers, enhancing our ability to run progressively more elaborate projects with increasingly more sophisticated outcomes.
The Future of GUE
The coming decades of GUE’s future appear very bright. Slow but steady growth has now placed the organization in a position to make wise investments, ensuring a vibrant and integrated approach. Meanwhile, evolving technology and a broad global base place GUE in a unique and formidable position. Key structural and personnel adjustments complement a growing range of virtual tools, enabling our diverse communities and representatives to collaborate and advance projects in a way that, prior to now, was not possible. Strong local communities can be easily connected with coordinated global missions; these activities include ever-more- sophisticated underwater initiatives as well as structural changes within the GUE ecosystem. One such forward-thinking project leverages AI-enabled, adaptive learning platforms to enhance both the quality and efficiency of GUE education. Most agencies, including GUE, have been using some form of online training for years, but GUE is taking big steps to reinvent the quality and efficiency of this form of training. This is not to replace, but rather to extend and augment inwater and in-person learning outcomes. Related tools further improve the fluidity, allowing GUE to seamlessly connect previously distant communities, enabling technology, training, and passion to notably expand our ability to realize our broad, global mission.

Meanwhile, GUE and its range of global communities are utilizing evolving technologies to significantly expand the quality and scope of their project initiatives. Comparing the impressive capability of current GUE communities with those of our early years shows a radical and important shift, allowing results equal or even well beyond those possible when compared even with well-funded commercial projects. Coupled with GUE training and procedural support, these ongoing augmentations place our communities at the forefront of underwater research and conservation. This situation will only expand and be further enriched with the use of evolving technology and closely linked communities. Recent and planned expansions to our training programs present a host of important tools that will continue being refined in the years to come. Efforts to expand and improve upon the support provided to GUE projects with technology, people, and resources are now coming online and will undoubtedly be an important part of our evolving future.
The coming decades will undoubtedly present challenges. But I have no doubt that together we will not only overcome those obstacles but we will continue to thrive. I believe that GUE’s trajectory remains overwhelmingly positive, for we are an organization that is continually evolving—driven by a spirit of adventure, encouraged by your heartwarming stories, and inspired by the satisfaction of overcoming complex problems. Twenty-five years ago, when I took the path less traveled, the vision I had for GUE was admittedly ambitious. The reality, however, has exceeded anything I could have imagined. I know that GUE will never reach a point when it is complete but that it will be an exciting lifelong journey, one that, for me, will define a life well lived. I look forward our mutual ongoing “Quest for Excellence.”
See Listings Below For Additional Resources On GUE And GUE Diving!

Jarrod is an avid explorer, researcher, author, and instructor who teaches and dives in oceans and caves around the world. Trained as a geologist, Jarrod is the founder and president of GUE and CEO of Halcyon and Extreme Exposure while remaining active in conservation, exploration, and filming projects worldwide. His explorations regularly place him in the most remote locations in the world, including numerous world record cave dives with total immersions near 30 hours. Jarrod is also an author with dozens of publications, including three books.
A Few GUE Fundamentals
Similar to military, commercial and public safety divers, Global Underwater Explorers (GUE) is a standards-based diving community, with specific protocols, standard operating procedures (SOPs) and tools. Here are selected InDEPTH stories on some of the key aspects of GUE diving, including a four-part series on the history and development of GUE decompression procedures by founder and president Jarod Jablonski.

Anatomy of a Fundamentals Class
GUE Instructor Examiner Guy Shockey explains the thought and details that goes into GUE’s most popular course, Fundamentals, aka “Fundies,” which has been taken by numerous industry luminaries. Why all the fanfare? Shockey characterizes the magic as “simple things done precisely!

Back to Fundamentals: An Introduction to GUE’s Most Popular Diving Course
Instructor evaluator Rich Walker attempts to answer the question, “why is Fundamentals GUE’s most popular diving course?” Along the way, he clarifies some of the myths and misconceptions about GUE training. Hint: there is no Kool-Aid.

As you’d expect, Global Underwater Explorers (GUE) has a standardized approach to prepare your equipment for the dive, and its own pre-dive checklist: the GUE EDGE. Here explorer and filmmaker Dimitris Fifis preps you to take the plunge, GUE-style.

The Flexibility of Standard Operating Procedures
Instructor trainer Guy Shockey discusses the purpose, value, and yes, flexibility of standard operating procedures, or SOPs, in diving. Sound like an oxymoron? Shockey explains how SOPs can help offload some of our internal processing and situational awareness, so we can focus on the important part of the dive—having FUN!

Standard Gases: The Simplicity of Everyone Singing the Same Song
Like the military and commercial diving communities before them, Global Underwater Explorers (GUE) uses standardized breathing mixtures for various depth ranges and for decompression. Here British wrecker and instructor evaluator Rich Walker gets lyrical and presents the reasoning behind standard mixes and their advantages, compared with a “best mix” approach. Don’t worry, you won’t need your hymnal, though Walker may have you singing some blues.

Rules of Thumb: The Mysteries of Ratio Deco Revealed
Is it a secret algorithm developed by the WKPP to get you out of the water faster sans DCI, or an unsubstantiated decompression speculation promoted by Kool-Aid swilling quacks and charlatans? British tech instructor/instructor evaluator Rich Walker divulges the arcane mysteries behind GUE’s ratio decompression protocols in this first of a two part series.

The Thought Process Behind GUE’s CCR Configuration
Global Underwater Explorers is known for taking its own holistic approach to gear configuration. Here GUE board member and Instructor Trainer Richard Lundgren explains the reasoning behind its unique closed-circuit rebreather configuration. It’s all about the gas!

GUE and the Future of Open Circuit Tech Diving
Though they were late to the party, Global Underwater Explorers (GUE) is leaning forward on rebreathers, and members are following suit. So what’s to become of their open circuit-based TECH 2 course? InDepth’s Ashley Stewart has the deets.

Diving projects, or expeditions—think Bill Stone’s Wakulla Springs 1987 project, or the original explorations of the Woodville Karst Plain’s Project (WKPP)—helped give birth to technical diving, and today continue as an important focal point and organizing principle for communities like Global Underwater Explorers (GUE). The organization this year unveiled a new Project Diver program, intended to elevate “community-led project dives to an entirely new level of sophistication.” Here, authors Guy Shockey and Francesco Cameli discuss the power of projects and take us behind the scenes of the new program

Decompression, Deep Stops and the Pursuit of Precision in a Complex World In this first of a four-part series, Global Underwater Explorers’ (GUE) founder and president Jarrod Jablonski explores the historical development of GUE decompression protocols, with a focus on technical diving and the evolving trends in decompression research.