Describes the taxonomic groupings and provides links to images of some taxa.
Some characteristics of the phylum that includes starfish, sea cucumbers, sea urchins, crinoids and brittle stars.
Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and sand dollars.
A brief description of the phylum followed by a long list of annotated photographs.
Descriptions of the major species of Echinodermata (starfish, brittle star, sea urchin, feather star, sea cucumber) with illustrations and links to photos.
Characteristics and phylogeny of the spiny-skinned animals: sea urchins, starfish, and their allies.