Most Calcarea are 10 cm less in height, and are dull in color, although some colorful species are known. Other groups of sponges have microscleres, which are smaller reinforcing spicules.
The calcium carbonate spicules are only megascleres, or large structural spicules. ( Wörheide, 2002)Ĭalcarea is the only class with asconoid and syconoid construction. In tropical regions they are associated with coral reefs. ( Wörheide, 2002)Įxclusively marine and mainly in temperate regions, Calcarea sponges are usually found in shallower, sheltered waters less than 1000 m. ( Wörheide, 2002) Geographic RangeĬalcarea sponges are found throughout the oceans, but are mainly in temperate areas. There are about 400 described species of sponges in the Calcarea group.
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