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 ...

Across tropical and subtropical seas, a quiet biological crisis is unfolding as vast populations of reef‑grazing sea urchins ...

The sunflower sea star (Pycnopodia helianthoides) can be found throughout intertidal and subtidal coastal waters of the northeast Pacific Ocean, from Alaska to at least northern Baja California, ...

Sea urchins are small ocean creatures found around the world. They are covered in spikes and have a painful sting if you bump or step on one. Stings are often red and swollen and may cause serious ...

Sea urchin is a delicacy in Asia, South America, Europe, and increasingly in California, where the uniquely flavored roe, or uni, is used in sushi, gourmet cuisine, and products such as sauces and ...

Every summer, millions of people head to the coast to soak up the sun and play in the waves. But they aren’t alone. Just beyond the crashing surf, hundreds of millions of tiny sea urchin larvae are ...

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 ...

Young sea urchins spread neuron-rich tissue across their bodies. A new atlas shows complex neural and light sensing networks.

SANTA CRUZ, California — Along California's central coast, an unusual underwater scene is unfolding. Where sea urchins previously hid in cracks and crevices, they now carpet the seafloor. Yet a couple ...