Umm...isn't it coastal plains? So I will have to say plains.
Coastal Plains
The Mississippi River, the Gulf Coastal Plain, and the Atlantic Coastal Plain.
Plains, coastal plains, and mountains
Land.
rivers & lakes
rivers & lakes
Galveston Island.
Golf Coastal Plains
plains
The atlantic coastal plains is a place that has a lot of water and grass
They are the Atlantic Coastal Plains and Gulf Coastal Plains. The Atlantic Plains runs close to the Atlantic Coast and the Gulf Plains runs near the Gulf of Mexico.
Atlantic