Sea urchins have been dying in the Caribbean from a parasite that is now also killing them in the sea of Oman.

To blunt the toxic arsenic in the waters where it lives, a deep-sea worm combines it with another chemical to produce a less ...

Sea urchins have no brains or hearts. But put them in the proximity of the unmistakable sunflower sea star, and somewhere in their pin cushion-like body, they sense trouble. That's the main ...

The turquoise water of Hōnaunau Bay in Hawaii, an area popular with snorkelers and divers, is teeming with spiny creatures that could erode the reef past the point of no return, new research has ...

In Japan, researchers are feeding vegetables to hungry sea urchins - a popular sushi ingredient - to try and stop them from eating dwindling stocks of ocean seaweed.