Biologists thought that marine heat waves lowered urchin reproduction only at lethal temperatures. A new study shows ...

The pointy shell of sea urchins hides a remarkably complex neural network that resembles the brains of vertebrates, new research suggests.

Red Rock Crabs: When Shellington and the crew try to gather some skittish crabs who have drifted away from home, they get help from some old friends. Sea Pigs: The Octonauts must stop a huge herd of ...

Pandemic killed off sea urchins in the Red Sea Linked to pathogen which kills fast and violently Sea urchins feed on algae that block out sun if unchecked Researchers warn pandemic heading towards ...