Pseudocentrotus_depressus
Pseudocentrotus depressus
Species of sea urchin
Pseudocentrotus depressus, commonly known as the pink sea urchin,[2] is a species of sea urchin, one of only two species in the genus Pseudocentrotus. It was first described in 1864 by the American marine zoologist Alexander Agassiz as Toxocidaris depressus, having been collected during the North Pacific Exploring and Surveying Expedition undertaken by Captain Cadwalader Ringgold and later Captain John Rodgers.[1]