Sand Dollars Explained: Habitat, Anatomy, Spines, and Feeding

In this video, we take a close look at living sand dollars (Echinarachnius parma) in their natural habitat, their spines moving close up, and more. What you’ll see in this video: • Where sand dollars live and how they stay buried in the sand • Sand dollar anatomy explained in simple terms • Their tiny moving spines and how they use push food into their mouth • How sand dollars actually eat • The mysterious green material on their surface—what it is and why it’s there? These incredible animals are echinoderms, related to sea stars and sea urchins, and they’re far more active than most people realize. Watching their spines move up close completely changes how you see them. If you enjoy tidepool life, marine biology, and discovering what’s hiding just beneath the sand, this one’s for you. Shop marine life at: gulfofme.com