List of national parks of the United States National parks National parks

| Name_ | Location_ | Date_established | Area | Description_ |
|---|---|---|---|---|
| Biscayne | Florida , 25°39′N 80°05′W﻿ / ﻿25.65°N 80.08°W | June 28, 1980 | 172,924.07 acres (699.8 km2) | Located in Biscayne Bay, this park at the north end of the Florida Keys has four interrelated marine ecosystems: mangrove forest, the Bay, the Keys, and coral reefs. Threatened animals include the West Indian Manatee, American crocodile, various sea turtles, and peregrine falcon. |
| Black Canyon of the Gunnison | Colorado , 38°34′N 107°43′W﻿ / ﻿38.57°N 107.72°W | October 21, 1999 | 32,950.03 acres (133.3 km2) | The park protects a quarter of the Gunnison River, which has dark canyon walls from the Precambrian era. The canyon has very steep descents, and it is a site for river rafting and rock climbing. The narrow, steep canyon, made of gneiss and schist, is often in shadow, appearing black. |