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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 ...

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 ...

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.‌ ...

Sea urchins are dying across the Caribbean at a pace scientists say could rival a mass die-off that last occurred in 1983, alarming many who warn the trend could further decimate already frail coral ...

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 ...

Now, scientists report that a sudden and widespread collapse of sea urchins has reached the Canary Islands. A new study shows ...

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 ...

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 ...