The Florida Keys are a coral cay archipelago located off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about 15 miles (24 km) south of Miami, and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry Tortugas.

The islands lie along the Florida Straits, dividing the Atlantic Ocean to the east from the Gulf of Mexico to the northwest, and defining one edge of Florida Bay. At the nearest point, the southern part of Key West is just 90 miles (140 km) from Cuba. The Florida Keys are between about 24.3 and 25.5 degrees North latitude.

More than 95 percent of the land area lies in Monroe County, but a small portion extends northeast into Miami-Dade County, such as Totten Key. The total land area is 137.3 square miles (356 km2). The city of Key West is the county seat of Monroe County. The county consists of a section on the mainland which is almost entirely in Everglades National Park, and the Keys islands from Key Largo to the Dry Tortugas.

The Florida Keys have distinctive plant and animals species, some found nowhere else in the United States, as the Keys define the northern extent of their ranges. The climate also allows many imported plants to thrive. Some exotic species which arrived as landscape plants now invade and threaten natural areas.

DRY TORTUGAS

Just when you thought the Keys were as remote as you could get, there’s Dry Tortugas National Park. This conglomerate of islands 70 miles west of Key West is accessible only by boat or seaplane. But not to worry; even if you don’t have your own transportation, you can ride the Yankee Freedom ferry from Key West to Garden Key and still explore the park’s historic Fort Jefferson; snorkel, dive or swim in the clear waters; enjoy breathtaking birdwatching; and pitch your tent under the stars.

John Pennekamp Coral Reef State Park

John Pennekamp Coral Reef State Park is a Florida State Park located on Key Largo in Florida. It includes approximately 70 nautical square miles (240 km²) of adjacent Atlantic Ocean waters. The park is approximately 25 miles in length and extends 3 miles into the Atlantic Ocean. It was the first underwater park in the United States. The park was added to the National Register of Historic Places on April 14, 1972. The primary attractions of the park are the coral reefs (such as Molasses Reef) and their associated marine life.

According to en.Wikipedia; visitflorida.com. Source of photos: internet