For years, Sheck Exley existed in my memory as one of my high school math teachers. He was eccentric, interesting, and hard to forget. He had sayings he seemed to keep ready for almost any situation, including one I still remember clearly: “It’s my way or the highway.”
I knew he was involved in karate. I knew he had a personality that could fill a classroom. What I did not know was that he was also one of the most accomplished cave divers in the world. At the time, I had no idea.
The Blackboard
I remember one day in his class when he had students come to the blackboard to work algebra problems. When my turn came, I was feeling pretty confident. The equation looked easy, so I walked quickly to the board, worked it out, and was already prepared to enjoy being right. Except I wasn’t.
I had made some stupid little mistake. Sheck responded with one of those funny sayings he always seemed to have ready. I wish I could remember exactly what he said. Whatever it was, I remember slumping back into my seat, slightly embarrassed and already biding my time until I could get another chance to demonstrate my brilliance.
Looking back, what strikes me is that he could have skewered me. I had walked to that board with enough teenage arrogance to make myself an inviting target. He could have made the mistake hurt a lot more than it did. Instead, he showed me some grace and let me sit down. That is the Sheck Exley I knew then.
Meeting Him Again
Some years after high school, I was at the house of a friend of a friend when I noticed one of Sheck’s books sitting on the coffee table. I picked it up and starting looking through the book. And pretty much stopped participating in whatever everyone else was doing.
I sat there reading about cave exploration and underwater passages hidden beneath the North Florida landscape I had grown up around. The more I read, the stranger the experience became. This was Sheck Exley, my math teacher. Except it felt like I was reading about someone I had never met.
The person in those pages seemed almost entirely new to me. I had sat in his classroom. I knew his sayings. I knew about the karate club. I had even had my own small encounter with his sense of humor at the blackboard. But I had no idea how much of his life existed somewhere else entirely.
A Modern-Day Explorer in Our Own Backyard
What makes that realization even stranger is how often his story now intersects with places that were already part of my own life.
Telford Spring was one of those places. I spent countless childhood afternoons there, swimming through the limestone opening beneath the natural bridge and never imagining how far the cave system extended beyond what I could see. Years later, I learned that Sheck was one of the divers involved in exploring and surveying those passages.
Peacock Springs is another. My dad took my sister and me there long before it became a state park, back when the dirt road through the woods was part of the adventure. Today, Peacock is known around the world for its cave system, and there is a plaque there honoring Sheck.
Then there is Falmouth, another spring with an enormous hidden world beneath what looks like a small patch of water at the surface.
The more I learn about these places, the more often his name appears.
We tend to imagine explorers as people from another century, crossing oceans, climbing mountains, or disappearing into blank spaces on old maps. But Sheck was a modern-day explorer working right here in our own backyard, pushing into underwater passages beneath North Florida that most people would never see.
It is an odd feeling to keep encountering someone years after they are gone.
Someone I Had Never Met
Sheck died in 1994 while attempting an extraordinarily deep dive in Mexico. By the time I really understood the scale of what he had accomplished, he was already gone.
That is probably why the coffee-table book memory has stayed with me. I was not discovering a famous cave diver who happened to share a name with one of my old teachers. I was discovering that one of my old teachers had been this person all along.
There is something humbling about realizing how little we may know about the people sitting right in front of us. I knew Sheck Exley. And in another sense, I did not know him at all.
Experience It
If you visit Wes Skiles Peacock Springs State Park, look for the plaque honoring Sheck Exley. Then walk the interpretive trail that follows the cave system beneath the woods. From the surface, the landscape looks quiet and ordinary: pines, oaks, sandy trails, and patches of water tucked into the forest. But beneath your feet is another world.
That was the world Sheck spent so much of his life exploring. And if you want to understand him beyond the plaque, find one of his books and read it.
That is how I first discovered the other Sheck Exley. Years after sitting in his classroom, I picked up one of his books from a coffee table and found myself completely absorbed in the story of a modern-day explorer I had somehow already met.
For me, Peacock connects those two versions of the same person: the eccentric math teacher I remember from a classroom and the explorer whose name I now keep finding beneath the places I grew up around.
Sometimes we discover hidden stories in landscapes. Sometimes we discover them in people. And sometimes it takes years to realize just how much was there all along.
— Dion, Anasa founder

