HIRONO, Iwate Prefecture--Sea urchin are a culinary delicacy, but because their shells are often seen as too difficult or costly to recycle, they end up getting tossed out in bulk. But a local ...

The shells of these unusual animals are dark with flecks of red, purple, and green, and their bodies are a deep orange color. The sharp spines of a sea urchin are a deterrent to most predators.

The Dane finds a magic shell, which, when rubbed ... sometimes called tongues—the sea urchin’s wobbly gonads. Karoline O.A. Pettersen Sea urchins with their skin and spines removed.

It turns out these balls of spikes are actually 5-sided echinoderms and thus related to starfish! We look at their beautiful ...

Considered a delicacy in several parts of the world, sea urchin, or uni in Japanese, is prized for its unique flavor. But the cost of the gonads — the orange tongues found inside an urchin ...