"When a big shadow appears in the deep blue & starts moving straight towards you,” reads the Manta Dive Center Instagram ...

Whale sharks (Rhincodon typus) are the largest fish in the world and are endangered but are hard to study because they’re largely solitary creatures that roam great distances. There are only about 30 ...

A battle between a megalodon and a blue whale sounds thrilling on paper, but in reality, these giants were separated by millions of years, which might be for the best. The megalodon, an enormous shark ...

A biologist explains the surprising evolutionary math behind how the blue whale became the largest animal that has ever lived ...

Whale sharks in Indonesia are suffering widespread injuries, with a majority scarred by human activity. Researchers found bagans and boats to be the biggest threats, especially as shark tourism grows.