In Northern California, purple sea urchins are decimating kelp forests. Though the species of urchin causing problems may vary by region, the damage is the same. NNehring/iStock This article is from ...

A few weeks ago, Sarah Gravem lowered a “ravenous, terrifying predator” from her boat down to the ocean floor off Sitka. Then she released it. In a slow-motion drama, sea urchins fled as a pizza-size ...

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 sea otter floating above ribbons of kelp is undoubtedly one of nature’s cutest scenes. It’s well known that the marine ...

Sea urchins are devouring California’s coastal kelp faster than it can reproduce, researchers said. Photo by Portuguese Gravity on Unsplash California scientists are declaring war on sea urchins. The ...

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From kelp forests to sea grass meadows, these charismatic predators are quietly holding parts of the coast together.

Add Yahoo as a preferred source to see more of our stories on Google. Researchers examining a century of ocean maps made an exciting discovery linking sea otter populations to kelp forests: Where sea ...

MONTEREY — Within the last century, the recovery of southern sea otters, the unofficial mascot of Central California, has contributed to the health of California’s underwater forests according to a ...