Wondering about the world's weirdest sea creatures? We've compiled this list of the 20 weirdest animals in the ocean to show ...

Beneath the waves are millions of dangerous sea creatures – and they exist on every continent, from Oceania to Asia and Central America. We’ve ranked the top 20, in order of their deadliness to humans ...

Some of the world’s most fascinating creatures live underwater. And unlike the more mainstream animals under the sea — seahorses, sharks, and even deep sea anglerfish — one cool member of the aquatic ...

The blue whale is the largest animal known to have ever lived, reaching lengths of nearly 100 feet and weighing more than 300 ...

Barreleye fish are named for their unique, barrel-shaped eyes. These eyes can rotate, allowing the fish to look both upward and straight ahead. Their eyes also have bright green lenses protected ...

An entire world lives deep under the ocean’s surface, far from human notice and as bustling as any city. Animals such as tubeworms and clams live crowded around plumes of methane that bubble up ...

Sea urchins have a body that is entirely made up of "head"—with a surprisingly complex central nervous system that functions, in essence, like an "all-body brain." This is the conclusion of an ...