Barrier island
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Barrier islands are a coastal landform, a type of dune system and sand island, where an area of sand off the coast has been formed by wave and tidal action parallel to the mainland coast. Barrier isla
Mantoloking, New Jersey rests on the barrier island of Barnegat Bay. Note how the barrier island shields the inland Barnegat Bay (left) from the more powerful wave action of the open Atlantic Ocean (right).
Satellite image of North Stradbroke Island, a barrier island in Queensland, Australia.
Outer barrier in Long Island
The Mississippi–Alabama barrier islands guarding Mobile Bay and the Mississippi Sound
Lagoon
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A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as a reef, a barrier island or islands, a barrier peninsula, or an isthmus. Lagoons are commonly di
Balos coastal lagoon of northwestern Crete. The shallow lagoon is separated from the Mediterranean Sea by narrow shoals connecting to a small, rocky mountain.
Garabogazköl lagoon in Turkmenistan
Venetian Lagoon
Satellite picture of the Atafu atoll in Tokelau in the Pacific Ocean