What is a lagoon?

What is a lagoon?

A lagoon is marine water or freshwater that is near to, but separated from, a larger body of water by a natural barrier or several natural barriers. It occurs in oceans and near the coast. Some lagoons have brackish water, which is a mixture of sea water and freshwater from a river mouth at the coast.

The natural barrier between the small and large body of water can be a reef or a sandbar.

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