The phylum Echinodermata , which contains about 6000 species, gets its name from the Greek, literally meaning “spiny skin.”
Echinoderm? What does that mean? “Echino” means spiny and “derm” means skin. You may have heard of your epidermis. That’s your outside skin. The creatures in this group all have some type of spiny structure on the outside.
5 pages with over 300 photos of echinoderms!!