The entire body of a sea urchin is what researchers are now calling an “all-body brain,” with neurons that function as a brain throughout its anatomy.

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

Consider the sea urchin. Specifically, the painted urchin: Lytechinus pictus, a prickly Ping-Pong ball from the eastern Pacific Ocean. The species is a smaller and shorter-spined cousin of the purple ...

A silent global pandemic is causing a mass die-off of sea urchins. Discover the mystery pathogen threatening marine ...

Marine biologists at Scripps Institution of Oceanography at UC San Diego have created a line of sea urchins whose genetic makeup is fully mapped and can be edited to study human disease genes. The ...

South of Tampa Bay, in Florida, wedged between a quiet neighborhood and a mangrove forest, custom-designed aquariums are home to thousands of sea-urchin larvae that tumble and drift through the water.

When Mya Breitbart heard that something was killing off sea urchins en masse, she thought: Oh no, not again. The long-spined sea urchin—a fist-size ball of black defensive spines—is a crucial and ...

This article was originally featured on The Conversation. After four years of digging for fossils in a churchyard in York, Pennsylvania, amateur paleontologist Chris Haefner made an intriguing find.

A mysterious epidemic that began in the Mediterranean at the start of the year looks set to wipe out all of the Mediterranean and Red Sea’s urchins, and possibly their coral reefs too. When you ...