The turquoise water of Hōnaunau Bay in Hawaii, an area popular with snorkelers and divers, is teeming with spiny creatures that threaten to push the coral reef “past the point of recovery,” new ...

Discover the benefits of harvesting sea urchin on the west coast. Join us for the next sea urchin removal event in September. Trump says he gave new orders to US nuclear submarines in response to an ...

A SPECIFIC SPECIES OF PURPLE SEA URCHINS. THIS WEEKEND DIVERS WITH THE NON PROFIT "REEF CHECK" WILL BEGIN THE NEXT PHASE OF REMOVAL. THIS INVOLVES CULLING THE URCHINS... OR KILLING THEM OFF BY ...

The sustained loss of a once abundant species of sea urchin in the Caribbean could also result in the functional extinction of diverse coral species from the region's reefs, according to new research.

Sunlight streaming through a forest of giant kelp, Macrocystis pyrifera, off Catalina Island, California, USA. (Photo by: David Fleetham/VW PICS/Universal Images Group via Getty Images) Scuba divers ...