INDIAN GEOGRAPHY

Detailed explanation-1: -Most structures that we call “coral” are, in fact, made up of hundreds to thousands of tiny coral creatures called polyps . Each soft-bodied polyp-most no thicker than a nickel-secretes a hard outer skeleton of limestone (calcium carbonate) that attaches either to rock or the dead skeletons of other polyps.

Detailed explanation-2: -Corals are tiny marine invertebrates that typically live in colonies, secreting calcium carbonate to form a hard skeleton.

Detailed explanation-3: -Corals are in fact animals. The branch or mound that we often call “a coral” is actually made up of thousands of tiny animals called polyps. A coral polyp is an invertebrate that can be no bigger than a pinhead to up to a foot in diameter.

Detailed explanation-4: -Coral reefs are rock-like structures made from the skeletons of small organisms in oceans.