This predatory fish looks spooky enough as it is... until you realize it's looking back at you from inside its see-through skull.
The world's most bizarre rock goes by the name Pyura chilensis, and it actually contains skin, blood, muscles, guts and even a digestive tract inside of it.
This newly discovered crustacean is scary enough to put you off seafood for the rest of your life. Take a closer look...
Scientists have discovered the fossil remains of a gigantic carnivore which once stalked North America, naming it after a ferocious man-eating monster of Native American folklore.
A biologist on a rainforest expedition barely had time to snap a pic of this bizarre bug before it hopped away. Take a closer look!
Researchers have been puzzling over this spooky specimen, which they now believe to be an extremely rare and ancient species. Take a closer look!
This humongous sea beast is rarely spotted by humans... but when it does reveal itself, it's nightmare time. Watch the creepy video!
A photographer in the Caribbean came face-to-face with a dead ringer for the beloved blue Muppet. Take a closer look!
A team of zoologists recently classified a new species of the stinging, clawed critter which is unusually large for its kind. Want a closer look?
An online gallery depicting unusual aquatic formations includes some bizarre examples that look strangely alive...