Two underwater sea lilies were eaten and regurgitated around 66 million years ago. They were preserved as fossilized vomit.

For years the sea urchin's key predator was believed to be lobsters due to the crustacean's appendages being able to manipulate the spiky urchins to get inside. However the discovery that sharks ...

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 ...

and uses these needle-like growths to ward off predators. The spines inflict a painful wound if they penetrate human skin. The spines break when they go through flesh, which has to be cut open to ...