Echinoderm Animation: Five-part symmetry


The five-part symmetry of echinoderms is demonstrated, as the five-armed starfish is morphed into an urchin that is then morphed into a sea cucumber.

Next Generation Science Standards for this Video

The echinoderm body plan is a system based on five-part symmetry. All the tissues and organs are specialized for this unique way of life.

Starfish, urchins and cucumbers have adapted the echinoderm body plan for very different life styles.