The Texas coastline is seeing a rare and unusual sight: thousands of mysterious sea creatures washing ashore after what ...

Along long stretches of the Texas shoreline, thousands of rare sea creatures have been turning up dead or dying, transforming ...

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

Along the rocky coast of eastern Italy at night, researchers scanned a tide pool in hopes of seeing something interesting. A "leaf"-like sea creature caught their attention - and for good reason. It ...

Spurilla neapolitana was spotted in the United Kingdom waters for the first time. (Charlotte Cumming via SWNS) By Lauren Beavis A "groundbreaking" sea slug discovery has been made - in a UK first. 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 ...

A pair of sea creatures was spotted off the coast of California, and boaters are calling it an “incredible sighting,” a whale-watching company said. Two sperm whales were spotted around 5.5 miles off ...

A group of “rarely seen” Gervais’ beaked whales was recently spotted near Madeira, a Portuguese archipelago, photos show. Screengrab from the Magic Dolphin ecotour agency A mysterious group of ...

Seeing even one of these sea creatures is rare.