Diadematidae
Diadema setosum Oman.JPG
Diadema setosum in Oman.
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Class:
Echinoidea
Subclass:
Euechinoidea
Superorder:
Diadematacea
Order:
Diadematoida
Family:
Diadematidae

Gray, 1855 

The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow.

Senses

Like other sea urchins diadematids are sensitive to touch, light, and chemicals; additionally they do have eyes (eye spots) which is in contrast to other sea urchins. Because of this they can follow a threat with their spines.

Images


This article uses material from the Wikipedia article Diadematidae, which is released under the Creative Commons Attribution-Share-Alike License 3.0.