n. - (also called a salt marsh) A marsh adjacent to the coastline where salt water from the sea or ocean constantly intrudes to create an estuary of brackish or salt water.

Saltwater marshes are often populated with salt-tolerent grasses and weeds, such as sawgrass, cord grass, salt hay grass, and needlerush. Animals of a saltwater marsh include sea birds and a broad variety of saltwater and freshwater fish, reptiles and invertebrates.

Saltwater marshes can be found in New Zealand, in the Arctic, and along the Atlantic, Pacific, Alaskan and Gulf coasts of the United States.

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