By Chester Moore
Few prehistoric animals have captured the public’s imagination like the megalodon. Estimated to have reached lengths of 50 to perhaps more than 60 feet, this ancient apex predator has become the subject of documentaries, books, movies, and countless internet debates. Every Shark Week, the same question inevitably resurfaces:
Could megalodon still be alive?
I’ve been asked that question for years, and my answer is straightforward: I don’t believe it is. The fossil record and modern science strongly support the conclusion that Otodus megalodon became extinct approximately 3.6 million years ago.

Yet that doesn’t mean the mystery ends there.
For more than a century, experienced fishermen, sailors, commercial divers, and explorers have reported seeing sharks so enormous they seemed beyond explanation. Were these simply exaggerated fish stories? Mistaken identity? Encounters with exceptionally large great white sharks or other species? Or do they reveal something about how we perceive the unknown in the vastness of the ocean?
Those questions inspired this episode of Dark Outdoors, where we investigate the legend of the megalodon through the lens of science, history, and firsthand accounts.
Dark Outdoors Podcast | Episode 75
Category: Sharks | Ocean Mysteries | Cryptozoology | Marine Science
Listen to Episode 75
🎧 Apple Podcasts
https://podcasts.apple.com/nz/podcast/the-megalodon-mystery/id1630809603?i=1000777673046
🎧 Spotify
https://open.spotify.com/episode/0dzLBp3swKpgYKV0zEhhhI?si=Cp0EmvNZTKCsxJHnrVUD7A
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The Investigation
The latest episode of Dark Outdoors doesn’t attempt to prove that a prehistoric shark somehow escaped extinction.
Instead, it investigates why reports of enormous sharks continue to emerge from around the world and examines what those eyewitnesses may actually have encountered.
Among the stories explored is legendary outdoorsman and author Zane Grey’s remarkable encounter with an enormous shark in the South Pacific, Australia’s decades-old reports of mysterious giant sharks, and the enduring legend of Baja California’s “Black Demon.”
These accounts have become part of maritime folklore, but they also offer an opportunity to ask important questions about eyewitness testimony, marine biology, and the enduring power of mystery.
The Reality Behind the Legends
One of the most fascinating aspects of giant shark reports is that reality often proves just as remarkable as folklore.
The episode examines legendary charter captain Frank Mundus and the enormous great white sharks that made him famous, along with Deep Blue, one of the largest reliably documented great white sharks ever recorded.

It also explores whale sharks, basking sharks, and the megamouth shark—a species unknown to science until 1976 that demonstrates just how much remains to be discovered about life beneath the waves.
None of these species are megalodon.
But under the right conditions, each has the potential to leave an unforgettable impression on those fortunate enough to encounter them.
What You’ll Hear
In this investigation, you’ll discover:
- Why I don’t believe megalodon survives today.
- Zane Grey’s incredible giant shark encounter.
- Australia’s mysterious giant shark reports.
- The legend of Baja’s “Black Demon.”
- Frank Mundus and legendary great white sharks.
- Deep Blue and the largest documented great white sharks.
- Whale sharks, basking sharks, and the discovery of the megamouth shark.
- Why stories of giant sharks continue to be reported around the world.
Science and Mystery Can Coexist
One of the goals of Dark Outdoors has always been to examine mysteries without abandoning scientific evidence.
It’s entirely possible to appreciate extraordinary eyewitness accounts while recognizing that extraordinary claims require extraordinary evidence. That’s especially important when discussing one of history’s most famous prehistoric animals.
The megalodon may almost certainly belong to the distant past, but our oceans remain vast, mysterious, and capable of producing encounters that inspire awe, curiosity, and lifelong stories.
Sometimes the greatest mysteries aren’t about proving the impossible.
They’re about understanding the remarkable world we already know exists.
About Chester Moore
Chester Moore is an award-winning wildlife journalist, author, and host of Dark Outdoors, where he investigates the intersection of wildlife, conservation, history, true crime, and the unexplained. He is the founder of the Gulf Great White Shark Society and producer of the award-winning documentary Gulf Great White Sharks: Return of an Icon. Through journalism, documentaries, and public outreach, Moore works to replace wildlife myths with science while celebrating the wonder of the natural world.