For generations, Dunkleosteus terrelli, also known as Ohio’s state fossil fish, has been a familiar figure for those in the Cleveland area, regarded as one of prehistory’s great sea monsters. This ...

The deep sea is cold, dark and under immense pressure. Yet life has found a way to prevail there, in the form of some of Earth’s strangest creatures. Since deep-sea critters have adapted to near ...

Paleontology researchers in Europe have identified a new species of ancient marine reptile – often referred to as a "Jurassic sea monster" or "sea dragon" – that existed nearly 183 million years ago.

Megalodon usually gets all the attention when it comes to sea monsters, but ancient oceans were full of predators just as ...

Add Yahoo as a preferred source to see more of our stories on Google. In what may be the world's first-ever recorded sighting, a black seadevil — anglerfish known for living thousands of feet beneath ...

Recent studies have revealed that it feeds on deep-sea fish and other squids, but its hunting methods and reproductive cycle are still unknown. While it was long believed that there were many species ...