|See Great Barrier Reef a long narrow coral reef near and lying parallel to the shore, separated from it by deep water|
barrier reef |
A long, narrow ridge of coral that runs parallel to the mainland and is separated from it by a deep lagoon. Compare atoll, fringing reef.
a coral reef (q.v.) roughly parallel to a shore and separated from it by a lagoon or other body of water. A barrier reef is usually pierced by several channels that give access to the lagoon and the island or continent beyond it.
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