barrier island

What is barrier island?

barrier island meaning a long, usually narrow accumulation of sand, that is separated from the mainland by open water (lagoons, bays, and estuaries) or by salt marshes

Image of barrier island
Cape Lookout National Seashore currently consists of 4 barrier islands. (Photo: U.S. National Park Service)

 

reference: Coral Reef Information System – Glossary

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