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 ...

A venture called the Purple Urchin Ranching Project is helping to rejuvenate California’s kelp forests by ranching sea urchins for food. A heat wave in 2014 and 2015 disrupted ecosystems in California ...

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 - ...

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 ...

Peer into the water at the tide pools of Fort Ross State Historic Park on the Sonoma Coast, and you’ll see what appears to be an alien invasion of bright purple, spiky balls the size and shape of ...

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 ...

Fans of those spiny petards of the ocean deep — either because of how tasty they are, or how weird-looking — will want to head up to Mendocino this weekend or next for the third annual Purple Urchin ...