UN LUGAR PARA CREAR, DISFRUTAR, TRABAJAR Y COMPARTIR
· Echinoderms have radial symmetry. They have five or more lines which radiate from a central point where their mouths are.
· They are invertebrates with hard plates under their skin. Some like sea urchins have spines on the outside of their bodies .
· They live at the bottom of the sea and crawl slowly on hundreds of tube feet
Alvaro ¿que es esto:· ?