Once thought to be extinct, feather stars and sea lilies are related to more familiar animals like sea stars and sea urchins. Watch this video to learn more about this group of echinoderms.
Ophiuroids, better known as brittle stars, are one of the four main classes of mobile echnioderms. They demonstrate their speed, agility, and skill in limb-to-limb combat in a scuffle over a dead shrimp.
This short documentary is about a fascinating little creature that lives on the beach and is active at low tide. The sand dollar is part of the Echinoidea class of mobile echinoderms.
You have probably heard a lot about sea cucumbers but do not actually know what they are. Learn about this fascinating creature in this great, explanatory site.