28+ Dermal Ossicles Starfish Pictures. Brittle stars and basket stars. Most forms have a flattened and flexible body with a varying.

Starfish, or sea stars (a less confusing designation, since they are only very distantly related to fish), are marine invertebrates belonging to the kingdom animalia, phylum echinodermata, and class asteroidea, of which there are over 1800 known species. Dermal ossicles of the skeleton are regularly arranged in rows and are fused into an immobile, rigid structure called the test or corona. The name starfish is somewhat misleading suggesting an organism to be like a star and fish but as asterias lacks in both the characteristics, therefore between the ossicles of integument are present a large number of minute dermal pores.

A single starfish my eat over a dozen oysters or young clams every day.

Sea urchins and sand dollars. They consist of convoluted tubular ducts lined by epithelial cells associated with scattered basiepithelial nervous. We help medtech innovators throughout north america overcome challenging technology obstacles to create breakthrough products that improve health and save lives. Unlike some other starfish, which can reproduce through somatic fission or arm autonomy, a.