Sea Urchins

Description

Sea urchins are spiny grazers that cling to rocky surfaces and help shape the seafloor ecosystem. Divers often notice them in clusters, sometimes tucked into crevices, where their movement is slow but constant.

Orders

Long-Spined Sea Urchins (Diadematoid Urchins)

Diadematoida

Camarodonte Sea Urchins

Camarodonta

Taxonomy