The marine photographer who captured the footage said it could be the world's first recorded sighting of a black seadevil ...

The scary-looking fish is usually to be found more than a mile below the surface, where little to no light penetrates.

Miles below, a deep-sea fish approached the camera ... and Barathrites iris, swimming tail-first away from the camera with the help of top fins. “After the backward escape maneuver, the ...

"Swimming gives you a unique eye-view on the world because you are seeing it from ground or sea level," says Ella Foote, editor of Outdoor Swimmer Magazine and author of the book How to Wild Swim.

Lovers of winter swimming in costumes take a "bath" this month in the frigid Baltic Sea in Gdansk, Poland. Photo by Sergei Gapon Cold plunges, ice baths, polar plunges, Viking swimming ...

A deep-sea anglerfish was recently spotted swimming in broad daylight in the Canary Islands. The sighting is rare as the fish typically stays in the depths of the ocean below the sunlight zone.