During a dive off Argentina, scientists documented a rare jellyfish discovered a little over a century ago and seldom seen since, as well as the fish that keep it company.

Scientists spotted a rare jellyfish with huge ribbon-like arms deep in the ocean, where dozens of possible new sea species were also discovered.

Researchers believe they may have worked out why giant trevally swim upstream in the Mtentu Estuary and circle in vast numbers.

One morning a week, Stefan Kiesbye makes the drive from his home in Santa Rosa to one of the beaches around Bodega Bay, to pick up trash. After dropping his wife at an airport shuttle early Sunday morning, Kiesbye headed out to Doran Regional Park in ...

A giant oarfish was found by the residents of Guinayangan, Quezon floating at the Guinayangan Municipal Fishport.

Fish come in every shape and size, but the longest ones are downright startling. While most exist deep in the ocean, these giants could stretch across a basketball court—or three. All of them exceed the definition of what a “fish” should look like ...