Gouldsboro, Maine-based Springtide Seaweed was the creator of the Maine Seaweed Exchange in October 2017, which helped assist ...

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.

Thousands of sea urchins have mysteriously washed up dead on a French island in the Indian Ocean, leaving scientists perplexed. Around 5,000 urchins have washed up on the western side of Reunion ...

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 ...

With spikes as long as knitting needles, long-spined sea urchins may look like underwater villains, but their appetite for algae makes them the unsung heroes of Caribbean reefs. Courtesy of the ...

SAN DIEGO, Calif. (KSWB) — Scientists are taking drastic measures to rehabilitate the California coastal kelp after an extreme warm water event knocked the ecosystem out of balance. Scientists say ...

Before 2013, divers on North America's west coast rarely saw purple sea urchins. The spiky animals, which are voracious kelp eaters, were a favorite food of the coast's iconic sunflower sea stars. The ...

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 ...