The urchin population might not recover unless fishery managers find ways to increase the number of fish that prey on Jonah crabs, whose strong numbers have been preventing the urchin population ...

Coral reefs in the Red Sea near Israel may be under threat as black sea urchins, a species critical to maintaining a healthy reef habitat, are dying off at an alarming rate.

A success at Scripps in San Diego means scientists can run experiments on painted sea urchins, potentially unlocking new discoveries in biology.

Hōnaunau Bay, Hawaii on 25 January, 2020. Sea urchin populations are ballooning in the bay, putting the coral reef at risk, a new study has found.