Pilates instructor Christina Black, 40, was surfing in her usual spot on February 7, when she kicked her legs back and accidentally ... She'd stepped on a sea urchin, and there were multiple ...

I was lonely. Something needed to change. That’s how I found myself diving for sea urchin. I’d had uni before, but it was probably treated with alum as a preservative. I didn’t want that.

Sea urchins are sphere-shaped or flat creatures that live in the ocean and are completely covered in protective spines. On the tips of these spines are tiny claw-like pincers called pedicellariae.

(Photo by Michael Langhans) In 2019, researchers found a forest of bull kelp growing on a deep reef that had been a sea urchin barren the previous year. (Photo by Patrick Webster) A diver conducts a ...

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 ...

Sea urchins are dying off at an alarming rate in Israel's Gulf of Eilat. The die-off of sea urchins first began in the eastern Mediterranean Sea and has now spread to the neighboring Red Sea.

Take sea urchin sex. First, males and females will puff out clouds of sperm and egg cells into the ocean. To find and fertilize an egg in the open waters, the sperm of these spiny seabed critters ...

One reason for the disappearing kelp is the tremendous expansion of the sea urchin population that feeds on it — including an estimated 10,000 percent increase in their numbers over the past few ...

Sea otters remain a threatened species in California. Despite recent efforts by sea urchin harvesters to reduce protections for southern sea otters under the Endangered Species Act, the species is ...

In subsequent years, sea urchin movements enabled kelp forest recovery at sites that had been denuded 'urchin barrens.' Those are among the key findings of a long-term study of sea urchins and ...