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A calcareous sponge is any of a variety of sponge of the class Calcarea, with skeletons composed of spicules of calcium carbonate.
Reef
Reef
Its when a sea animal forms a skeleton from calcium carbonate (CaCO3). Calcium carbonate is dissolved in seawater, but less soluable at higher temperatures. The majority of animals with calcareous skeletons, such as corals, are found in the tropics where it takes less energy to get it out of the seawater
Coral is the hard rock-like substance that is formed by skeletons of tiny sea animals. These calcareous skeletons build up and form islands and reefs.
Two types of biogenous sediments are calcareous ooze and siliceous ooze.
importance of coelenterates
Yes, coelenterates are invertebrates.
harmful effects of coelenterates
A coelenterates habitat is in the ocean and if it is not it lives somewhere
calcareous alge adaptations
calcareous algae