Coral reefs


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(Phys. Geog.) reefs, often of great extent, made up chiefly of fragments of corals, coral sands, and the solid limestone resulting from their consolidation. They are classed as fringing reefs, when they border the land; barrier reefs, when separated from the shore by a broad belt of water; atolls, when they constitute separate islands, usually inclosing a lagoon. See Atoll.

See also: Coral

References in classic literature ?
There are zigzag lines on it, just like your temperature on a card, and these are probably roads in the island, for the Neverland is always more or less an island, with astonishing splashes of colour here and there, and coral reefs and rakish-looking craft in the offing, and savages and lonely lairs, and gnomes who are mostly tailors, and caves through which a river runs, and princes with six elder brothers, and a hut fast going to decay, and one very small old lady with a hooked nose.
Moist climate, coral reefs, sharks, Port Blair, convict-barracks, Rutland Island, cottonwoods--Ah, here we are.
The coloured map appended to my volume on Coral Reefs, led me to conclude that the great oceans are still mainly areas of subsidence, the great archipelagoes still areas of oscillations of level, and the continents areas of elevation.
I am refreshed and expanded when the freight train rattles past me, and I smell the stores which go dispensing their odors all the way from Long Wharf to Lake Champlain, reminding me of foreign parts, of coral reefs, and Indian oceans, and tropical climes, and the extent of the globe.
She was going among the coral reefs and cocoa-nuts and all that sort of thing, and she was chartered for a fortunate individual of the name of Pa (himself on board, and much respected by all hands), and she was going, for his sole profit and advantage, to fetch a cargo of sweet-smelling woods, the most beautiful that ever were seen, and the most profitable that ever were heard of; and her cargo would be a great fortune, as indeed it ought to be: the lovely woman who had purchased her and fitted her expressly for this voyage, being married to an Indian Prince, who was a Something-or-Other, and who wore Cashmere shawls all over himself and diamonds and emeralds blazing in his turban, and was beautifully coffee- coloured and excessively devoted, though a little too jealous.
He may even now--if I may use the phrase--be wandering on some plesiosaurus-haunted Oolitic coral reef, or beside the lonely saline lakes of the Triassic Age.
is raised, and some long mistake, some complicated edifice of self-delusion, over- confidence, and wrong reasoning is brought down in a fatal shock, and the heart-searing experience of your ship's keel scraping and scrunching over, say, a coral reef.
He has no idea, poor wretch, of the spiritual destitution of a coral reef in the Pacific or what it costs to look up the precious souls among the coco-nuts and bread-fruit.
These pages represent examples from coral reefs in the Red Sea, Indian Ocean, the Great Barrier Reef, the Hawaiian Islands, the Central American Pacific islands, the Florida Keys, and the Caribbean.
Coral reefs provide shelter and food to about 25 percent of all underwater animals
The activities of the project will increase awareness of the mechanism, causes, and impacts of climate change on coral reefs and coastal areas by using a multimedia approach in order to reach out to all age groups.
Despite the comparably small footprint they take on the ocean floor, tropical coral reefs are home to a substantial part of all marine life forms.

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