A mysterious epidemic that began in the Mediterranean at the start of the year looks set to wipe out all of the Mediterranean and Red Sea’s urchins, and possibly their coral reefs too. When you ...

It's very hard to kill a purple sea urchin. Starve it for years, and it will fall dormant on the ocean floor, devoid of any flesh — just an empty, spiky shell awaiting its next meal. They're like the ...

South of Tampa Bay, in Florida, wedged between a quiet neighborhood and a mangrove forest, custom-designed aquariums are home to thousands of sea-urchin larvae that tumble and drift through the water.

While uni, otherwise known as sea urchin, is a Japanese sushi staple, it’s not as commonly known in the U.S., though its popularity is growing because of the delectable sea creature’s abundance in ...