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.

These sea urchins burrow into the seafloor. Their fuzzy spines trap air, preventing the urchin from suffocating under the sand. Sea potatoes are also known as heart urchins due to the shape of their ...

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 ...

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 ...

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 ...