Tripneustes depressus, the white sea urchin or sea egg, is a species of sea urchin in the family Toxopneustidae. It is found on the seabed in the tropical eastern Pacific Ocean including Mexico, Panama, Ecuador and the Galápagos Islands.

Tripneustes depressus. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Tripneustes_depressus.