back arrow open glossary Image © 2009 ABS Purple sea urchin forward arrow Tell Me More
The skin of a sea urchin covers an inside hard layer like a shell. It can move around slowly, using five strips of tube feet. Urchins are covered with sharp spines for protection. They move their spines to point at you if you touch them! A sea urchin's mouth is on its bottom side.
This page from one of the Annie's Resource Attic online books is copyright 2009 by Ann Brundige and ann brundige studio. All text, images, sounds, and video clips are copyright 2009 by Ann Brundige and ann brundige studio. For details of this GNU license, see the Terms of Use section of the Annie's Resource Attic web site at www.annbrundigestudio.com.