Sea+Daisies---Asma+Dad

The sea daisies has been assigned to its own class, Concentricycloidea. It is highly modified to the class Asteroidea. Sea daisies lack an internal digestive system. No free swimming larval stages are known. The most distinctive features is the two circular water-vascular rings that encircle the diskike body. A thin membrane, called a velum.It covers the surface of the animal that is applied to the substrate. Digests and absorbs nutrients. Five pairs of brood pouches hold embryos during development. They lack arms and are less than 1 cm in diameter. Peripodida Deep seas off New Zealand, northern central Pacific, and the Bahamas.