Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. There’s a case to be made that the world’s greatest forests are ...

Ravenous, brainless and covered with spikes, sea urchins have evolved to not be messed with. Off of the south coast of Oregon, one kind of urchin in particular, the purple sea urchin, is enjoying an ...

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.‌ ...

A sudden, unexplained mass die-off is decimating sea urchins around the world, including catastrophic losses in the Canary ...

After noticing his urchins carrying rocks, shells and even hermit crabs around in his 120 gallon saltwater aquarium, a Colorado aquarium enthusiast started making them custom hats. Wilson Souza's ...

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 ...

Mushrooming carbon-dioxide levels are leading to caustic ocean conditions, but some species, like the purple sea urchin, have the ability to adapt to this changing environment, a new study shows.

NEWPORT, Ore. — Tens of millions of voracious purple sea urchins that have already chomped their way through towering underwater kelp forests in California are spreading north to Oregon, sending the ...

Sunlight streaming through a forest of giant kelp, Macrocystis pyrifera, off Catalina Island, California, USA. (Photo by: David Fleetham/VW PICS/Universal Images Group via Getty Images) Scuba divers ...

GOLETA, Calif. — Draped atop pillows of sushi rice or displayed in its forebodingly spiny seven-inch shell, the ubiquity of red sea urchin at high-end sushi restaurants and raw bars is a symbol of ...