For the first time ever, marine biologists have recorded the heart rate of a blue whale in the wild—the results of…

If one thing’s clear from Jill Heinerth’s breathtaking new memoir on her life as a professional cave diver, it’s…

Thai authorities announced on Sunday that they have successfully extracted four of the dozen boys who, alongside…

The Yucatan Peninsula is renowned for its extensive network of submerged tunnels and caves. Now, after searching for…

Harrowing new video shows a large great white shark lunging for a chunk of tuna—and then wriggling its way inside a…

Ocean-dwelling creatures like whales, seals, and walruses don’t freeze in the icy waters thanks to their thick…

When swimming most people try to avoid bellyflopping into the water since it feels like 1,000 people slapping you in…

There’s nothing I want more in the world than to be surrounded by so many sardines in the ocean that it looks like…

The Navy is developing a new diving helmet fitted with something called Divers Augmented Vision Display (DAVD). It’s…

Here’s some chillingly beautiful shots showing what it’s like to cave dive the ‘El Toh’ cave in Yucatan, Mexico.…

Oh. My. Holy. Bananas. This shark attack video from Hillary Rae shows an 11 and a half foot shark biting and gnawing…

You’ve heard that we know more about space than we do the deep ocean. But did you know it’s so unexplored that…

I’m not exactly sure I know what a teleportation tunnel actually is but I’d imagine it would look a lot like this.…

Wow, just wow. It's breathtaking (literally, if you try to hold your breath like the free diver in this video) to…

Diving underneath ice might be the easiest way to be transported into another world that's completely unlike ours.…

Astronaut Daniel T. Barry thinks NASA's mission to Mars is humanity's most important endeavor yet, for reasons…

"Ocean Gravity" is a project by director and underwater cameraman Julie Gautier and shows diver Guillaume Néry being…

Swimming inside an iceberg looks amazing because the ice looks like glass and that's crazy, and because it kind of…

Off the coast of Southern California, there's an underwater city. A thicket of almost 30 enormous steel oil rigs,…

Lobsters never took over the world because their claws are terrible at grasping. It's the same reason deep sea…