Some of the largest creatures that have ever lived on earth thrive by eating tiny prey. Why don’t they eat bigger fish, and ...

A giant creature with a "toilet seat-shaped" head and huge fangs was a top predator 40 million years before the first dinosaurs evolved, new research reveals. The skull alone of Gaiasia jennyae was ...

In a Russia rock formation once used as a quarry, an ancient gigantic bear jawbone was discovered. Elizabeth George via Unsplash Prehistoric creatures came in all shapes and sizes, from the towering ...

New Zealand has taken great strides to protect the increasingly threatened Giant Wētā, one of the heaviest insects on Earth.

For centuries, massive teeth washing ashore left people wondering what kind of monster once ruled the seas. Those teeth belonged to the megalodon, the largest shark to ever exist. In this video, ...

It was about 100 years ago when a massive sea creature was first discovered, dead. Now, video of one very much alive has been captured, albeit in much smaller form. According to a press release ...

Like a scene out of a Jules Verne novel, scientists from Schmidt Ocean Institute recently encountered a giant phantom jelly (Stygiomedusa gigantea). The enormous deep-sea jellyfish was spotted about ...

A hoodwinker sunfish, or Mola tecta, can weigh as much as 4,400 pounds and can grow up to nine feet long Charlotte Phillipp is a Weekend Writer-Reporter at PEOPLE. She has been working at PEOPLE since ...