Archipelago

a group of islands clustered together in an open expanse of sea or ocean

Rain Forest
A very dense forest in a region where rain is very heavy through the year.

Key
A very small, low, offshore island or reef. Keys are built from coral and sand.

Fjord
A long, narrow inlet of the sea between tall,rocky cliffs.

Peninsula
Area of land that is almost surrounded by water.

Isthmus
A narrow strip of land that does two things: (1) it connects two much larger areas of land. and (2) it narrowly separates two large bodies of water.

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