Contentedly full from its last meal, a mysterious sea creature swam through the royal blue depths off the coast of Costa Rica. Twirling and spiraling, the misshapen animal moved in a mesmerizing way.

The deep sea also harbours some of the most intriguing and alien-like species in existence, yet for several centuries, these creatures have continued to evade discovery by humans. One such intriguing ...

This Indo-Pacific stunner dons a kaleidoscope shell of greens, blues, reds, and oranges, with purple eyes that swivel independently. At 3-18 cm long, it packs a punch like a .22 bullet using club-like ...

Scientists call it a siphonophore Apolemia, but you can call it the world’s longest “long stringy stingy thingy,” the giant alien tentacle or just “the entity.” An international team of ocean ...

The elusive Greenland shark photographed at the floe edge of the Admiralty Inlet, NU. (Photo: Hemming1952/Wikimedia Commons, CC BY-SA 4.0) With vast expanses of icy waters, extreme depths and the ...

Meet the “ghost fish,” a phantom of the abyss. Here’s how we found the first ever proof of its existence just a few years ago. The deep sea is a part of the world that very few humans get the chance ...