answersLogoWhite

0

Pedicellariae protect sea urchins by snapping open if something touches its outer surface. If it is touched on its inner surface then it snaps shut. They can be toxic because some have poison glands inside of them. They are attached to the stalks at the base of the spines that cover the sea urchin.

User Avatar

Wiki User

14y ago

What else can I help you with?