Ocean extremes, animal abilities, and evolution's stranger moves.
Why deep sea pressure doesn't crush fish comes down to water, not air, and a molecule that sets a hard chemical limit on how deep any fish can go.
Would the deep sea crush you flat? Not the way movies show it. Here is what nearly 16,000 psi would really do to an unprotected human body, and why.
How do tardigrades survive space, boiling, freezing, and radiation? These microscopic 'water bears' have a survival trick that borders on the miraculous.
Why do sea creatures glow? Bioluminescence, living light made by a chemical reaction, lights up the deep ocean for hunting, hiding, and luring. Here's how it works.
How deep is the ocean? The deepest point plunges nearly 7 miles down. Here's what the journey looks like, and the astonishing life waiting in the dark.
