These now-extinct creatures, including the Anteosaurus and Nanuqsaurus, are total nightmare fuel.

FISH
From a ginormous relative of the garden pillbug to fish with translucent heads, these organisms are adapted to the dark, cold, pressurized environment of the deep sea.
Toxic explosives were no barrier for the fish and invertebrates colonizing a World War II-era munitions dump in the Baltic Sea, according to a new study.
Scientists are finding new ways to listen to fish thanks to technological advancements.
Get to know the bumpy snailfish, a deep-sea creature that won‘t give you nightmares.
You’ll never look at these creatures the same way again.
A fishing group thought they caught a giant goldfish. What they hooked was actually much weirder.
Let’s dive into the evolutionary science behind the great white’s namesake feature.
‘Claws’ didn’t draw the same crowds as ‘Jaws’ when it premiered two years later.
The truth about these apex predators is often stranger—and more compelling—than the fiction.
Think the shark in ‘Jaws’ was huge? Find out how big great white sharks really get and how they compare to megalodons and whale sharks.
In the summer of 1975, movie audiences learned all they ever wanted to know about bloodthirsty sharks from ‘Jaws.’ We asked shark scientists to set the record straight on Hollywood’s prodigious predator.
Shark attacks are extremely rare. But they do occasionally happen, and some species are more likely to be behind the kill than others.
Zinc levels show the giant shark ate more creatures than expected, challenging long-held assumptions about its behavior.
While they’re ubiquitous in pop culture, there’s one place where you won’t find great white sharks, and that’s behind glass.
The megalodon was the largest shark to ever live, but luckily for us, it’s definitely extinct.
Skates lay black, ravioli-shaped egg cases. Rays give birth to live pups.
Researchers in Indonesia have filmed a rare coelacanth nearly 500 feet underwater—marking the first time the fish has been recorded in its native environment.