An encircling coral reef or sandbar can create a shallower area of water near an island, called a lagoon.
An island with a central lagoon is called an atoll. Kwajalein in the Indian Ocean is a very good example.
A circular coral island that encloses a lagoon is called an atoll. Atolls are typically formed from coral reefs that grow around the rim of a submerged volcanic island.
Each island is surrounded by a reef enclosing a shallow lagoon.
staten island
it is a lagoon
The name of the lagoon in Venice is called the Venetian Lagoon. In Italian, the Venetian Lagoon in called Laguna Veneta.
atoll
I believe it is called goo lagoon
The movie is called "The Blue Lagoon." There is also a sequel called "Return to the Blue Lagoon."
A Barrier Reef. The barrier reefs grow parallel to the shore of an island and are separated from it by a deep lagoon.
Poveglia Island is located in the lagoon of Venice, Italy.