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| echinoderms | |
Sea daisies ( Order '''Peripoda''') make up a small group belonging to the Echinoderm s, with two Species described in a single Genus . CHARACTERISTICS These species have disk-shaped flattened body and are less than 1 cm in diameter. They have a water-vascular system and are dotted with Tube Feet around the edge of the disk. They do not have arms, but five Ambulacral Area s. They do not have mouthparts either, so they seem to get nutrition through the Membrane surrounding their body. Sea daisies typically have two Circummoral Canal s and a single peripheral ring of Podia . It is not clear yet if they belong to the Asteroid Clade or not. SPOTTING More than a 100 specimens belonging to this order have been recorded at two main sites: off the waters of New Zealand in deep-sea environment, and in the Bahamas . They are always found in deep waters, living upon decaying wood. CLASSIFICATION They were discovered in 1986 and their position within the echinoderms has been contentious, being placed at first in a new class, Concentricycloidea. As of 2005, they are placed with Starfish in the class Asteroidea . Family Xyloplacidae
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