A photographer, a kite-surfer and a freediver witness the interaction of a lifetime with killer whales in Norway.

The Crown-of-Thorns Starfish is beautiful but deadly. Is there a way to combat their zombielike invasion before it's too late?

.

With their sleek, streamlined bodies and distinctive velvet-black fin tips, this species is considered one of the most beautiful sharks in the ocean.

The basking shark is the second-largest fish in the ocean. Learn where you can encounter this unique shark and other fun facts!

A true story about an unusually large sperm whale inspired the novel *Moby-Dick*.

The public is asked to comment on a federal plan to protect newly discovered deep-water corals in the Gulf of Mexico.

Insight into the behavior of these sharks allows scientists to better understand the threats they face.

Australian researchers now have a better understanding of the whales' flashy surface behaviors.