Researchers alarmed by the proliferation of purple urchin that have decimated kelp forests along the north coast are experimenting with a somewhat more brute force tactic for getting rid of them - ...

Purple urchins in saltwater tanks at the Cultured Abalone Farm, where they feed on kelp, plus dulse and ogo seaweed, in order to develop uni. (Ricardo DeAratanha / Los Angeles Times) Draped atop ...

Purple sea urchins, beware: There’s a purple urchin-eating predator on the horizon — and its name is the sunflower sea star. That’s the plot line coming from a small upstart research facility in Moss ...

When a team of scuba-diving marine biologists explored reefs off the central coast of California, they found themselves repeatedly swimming through lush kelp forests interspersed with patches of ...

The North Coast’s bull kelp forests have been plagued by a profusion of purple sea urchins in recent years. Festival organizers hope hungry humans might rebalance the ecosystem. The Nature Conservancy ...

April 28 update: The team spent the last few weeks of the spring 2022 semester testing their prototype in the University of Colorado Boulder Rec Center pool. New video shows the underwater vacuum in ...

The Pacific purple sea urchin's appetite for kelp threatens marine ecosystems along the California coast as it ravages the "lungs of the ocean."... Transforming the 'Roombas of the ocean' into ...

Urchin diver Stephanie Mutz (left) brings in the purple urchins to The Cultured Abalone, where employees such as Devin Spencer (center) and Becca Troske help to fatten them. For a spiny creature that ...

Everyone prepare to have your minds blown six ways to Sunday, because scientists have released another fascinating view of… sea urchins. This time around, they captured cross-sectional images of the ...

On a sunny afternoon, Port of Bandon director Jeff Griffin pulled back black shade cloth from the corner of one of nearly a dozen aquaculture tanks lining the dock. Spiny, purple urchins clung to the ...

Sea urchins receive a lot of attention in California. Red urchins support a thriving fishery, while their purple cousins are often blamed for mowing down kelp forests to create urchin barrens. Yet for ...

If you’re just starting out in Dave the Diver there’s likely a long list of things you can’t interact with or overcome. Purple Sea Urchin is a fine example of an ingredient you’ll find early and often ...