Sea Daisies: Concentricycloidea

To move to new habitats, sea daisies use pulsing actions of their stomach or drift like parachutes. Sea daisies have separate sexes and mate rather than releasing eggs and sperm into the water. In one species the fertilized (FUR-teh-lyzed) eggs, those that have joined with sperm, develop inside a female, who gives birth to live young. In the other species the fertilized eggs are laid, and the young develop outside the female's body. The developing young are cone-shaped or flat.