Surfer on Mola mola sighting: “Lots of people thought the flopping dorsal fin was a shark." ...

Deep sea holds alien-like species. The frilled shark, a living fossil, remains a mystery. Its unique anatomy includes six frilled gill slits and a trident-like mouth. This predator hunts with stealth, ...

Sea creatures have adapted to help them thrive in extreme environments. Unusual features allow them to live thousands of feet below the surface. Underwater robots give researchers a glimpse at some of ...

Nature often outperforms imagination. While fantasy films rely on CGI and special effects, the real world quietly hosts ...

Children aboard a whale-watching vessel out of Newport Beach, Ca., on Wednesday appear to have thoroughly enjoyed their encounter with a bizarre-looking Mola mola. The accompanying footage, courtesy ...

Wondering about the world's weirdest sea creatures? We've compiled this list of the 20 weirdest animals in the ocean to show ...