The area of Gulf Islands National Seashore is 548.179 square kilometers.
The area of Canaveral National Seashore is 233.35 square kilometers.
The area of Fire Island National Seashore is 79.233 square kilometers.
The area of Cape Hatteras National Seashore is 122.698 square kilometers.
The area of Padre Island National Seashore is 527.848 square kilometers.
The area of Point Reyes National Seashore is 287.44 square kilometers.
The area of Cape Lookout National Seashore is 114.297 square kilometers.
The area of Channel Islands National Marine Sanctuary is 3,807.283 square kilometers.
The area of Mummel Gulf National Park is 122 square kilometers.
The area of Molle Islands National Park is 18 square kilometers.
The area of Smith Islands National Park is 18.7 square kilometers.
The area of Brampton Islands National Park is 10 square kilometers.
The area of Lindeman Islands National Park is 33.1 square kilometers.