Pennekamp Coral Reef State Park, established in 1963, is the first undersea park in the United States. Spanning approximately 178 nautical square miles, this park and the adjacent Florida Keys National Marine Sanctuary are home to stunning coral reefs, seagrass beds, and mangrove swamps. Located in Key Largo, the park extends 3 miles into the Atlantic Ocean, offering visitors a unique and scenic experience.

Named after the late John D. Pennekamp, a Miami newspaper editor and environmental advocate, this park aims to protect and preserve the only living coral reef in the continental United States. In addition to its diverse marine life, the park showcases a wide variety of tropical vegetation and shorebirds.

The coral formations at Pennekamp Coral Reef State Park are renowned for their beauty and diversity, attracting visitors from all over the world. Owned and operated by Randy and Mary Pegram, who welcome visitor suggestions and feedback, Pennekamp Coral Reef State Park provides a range of visitor services. From snorkeling and scuba tours to glass-bottom boat rides, visitors can explore the park's breathtaking underwater world.

Additionally, the park offers kayak and paddleboard rentals, allowing visitors to navigate the crystal-clear waters themselves. With its rich history, stunning marine environment, and exceptional range of activities, Pennekamp Coral Reef State Park is a must-visit destination for nature enthusiasts and adventure seekers alike