About 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 around 70 square nautical miles of adjacent Atlantic Ocean waters. The park is roughly 25 miles (40 km) long and extends 3 miles (4.8 km) into the Atlantic Ocean along the prominent Hawk Channel passage. 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 and their associated marine life.
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