25 August 2008

Reef types

There are three kinds of coral reefs: fringing rees, barrier reefs, and atolls.
  • Fringing reefs grow right up to the shore.

  • Barrier reefs are seperated from the shore by a wide, deep lagoon.

  • Atolls are coral reefs that surround a shallow lagoon. They are created when an island that is surrounded by barrier reefs sinks below the water, leaving a cicular reef, the atoll.

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