This weird-looking creature has been mistaken for a lot of things, including a whale placenta and a sea monster as well as a garbage bag. And less often, it’s recognized for what it is: a jellyfish!

Strange creature "was as good as dead" until this beachcomber stumbled across it.

An incredibly rare deep-sea fish has been spotted on the California coast.

“A rare Mola mola (ocean sunfish) washed up on our shore at Cardiff State Beach today,” San Diego State Lifeguards stated Wednesday via Instagram. “It’s the heaviest bony fish on earth and can weigh ...

Exceptionally preserved fossils from the Ediacaran period challenge what scientists thought was possible in sandstone. In the fossil record, creatures without hard shells or skeletons, such as ...

Everything really is bigger - and stranger - in Texas. This year proved the Lone Star State is full of wild surprises after several Texans spotted some rare and unusual encounters with sea creatures ...

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

Earth is home to creatures so strange, beautiful, and bizarre that it’s easy to forget we share the planet with them. These ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea ...

“I saw this amazing, cool, spectacular, rare fish while diving in Monterey," Judah wrote online.

Photis Gaitanos’ rough fingers adroitly untangle the venomous spikes of a lionfish from a net, throwing the exotic-looking ...