How Do Brittle Stars Eat - Web the dorsal half of the disk houses the stomach cavity and a short esophagus. Ophiuroids are a large group (over 1600 species) of echinoderms that includes the brittle stars. Web the animal feeds by extending one or more arms into the water or over the mud, the other arms serving as anchors. Web introduction to the ophiuroidea.
Web the animal feeds by extending one or more arms into the water or over the mud, the other arms serving as anchors. Web introduction to the ophiuroidea. Ophiuroids are a large group (over 1600 species) of echinoderms that includes the brittle stars. Web the dorsal half of the disk houses the stomach cavity and a short esophagus.