America's Premier Undersea Marine Reserve: History & Ecological Significance
Named after John D. Pennekamp, the visionary Miami Herald editor whose investigative journalism helped establish Everglades National Park and preserve the Florida Keys reef tract, John Pennekamp Coral Reef State Park was formally dedicated in 1963. Contiguous with the 2,900-square-nautical-mile Florida Keys National Marine Sanctuary (FKNMS), the park safeguards North America’s only living barrier coral reef.
While the park encompasses 3,000 acres of onshore mangrove wetlands, hammock trails, and campground loops, its core attraction lies submerged 3 to 6 nautical miles out in the open Atlantic. Here, spur-and-groove formations composed of massive brain coral (Diploria), elkhorn coral (Acropora palmata), and seafans rise from depths of 8 to 45 feet, creating shelter for over 260 tropical fish species and 80 varieties of coral.
Christ of the Abyss (Key Largo Dry Rocks)
The park's most iconic offshore site is the 8.5-foot, 4,000-pound bronze statue of Jesus Christ, cast by Italian sculptor Guido Galletti and submerged in 1965 in 25 feet of water at Key Largo Dry Rocks (GPS: 25°07.450'N, 80°17.800'W). On calm days with high tide flush, visibility exceeds 60 feet, allowing snorkelers at the surface to clearly view the statue's outstretched arms.
Depth: 25 ft • Sanctuary Preservation Area (SPA) • No-Take Zone
Cannon Beach & Far Beach Shorelines
For onshore visitors, Cannon Beach features remnants of a 1715 Spanish shipwreck, with historic 18th-century bronze cannons placed in 5 to 10 feet of water approximately 100 feet from shore. While lacking living coral heads, it provides a safe, wave-protected training lagoon for novice snorkelers and children before undertaking open-ocean charters.
Depth: 3–10 ft • Restrooms & Showers • Lifeguard Seasonal
Coral Restoration Nurseries, Mangrove Canals & Wildlife Stewardship
Beyond recreational snorkeling and diving, John Pennekamp Coral Reef State Park serves as a premier living laboratory for tropical marine conservation. In collaboration with the Coral Restoration Foundation and NOAA scientists, offshore underwater nurseries cultivate thousands of genetically resilient Staghorn and Elkhorn coral fragments suspended on PVC 'coral trees.' Once mature, these nursery-grown colonies are outplanted directly onto degraded reef spurs at Carysfort and Grecian Rocks to rebuild the structural complexity of the reef tract.
Onshore, the park protects critical coastal mangrove wilderness that serves as the biological nursery for the entire Upper Keys ecosystem. Dense prop-root matrices created by Red Mangroves (Rhizophora mangle) buffer coastal shorelines from storm surge while providing sheltered feeding grounds for juvenile snappers, barracudas, spiny lobsters, and bonnethead sharks. Visitors exploring the 2.5 miles of marked kayak waterways paddle through quiet saltwater tunnels where manatees, brown pelicans, and osprey thrive in undisturbed sub-tropical silence.
To preserve this sensitive marine reserve for future generations, all park visitors must adhere to strict leave-no-trace protocols. Touching, standing on, or collecting living coral is strictly prohibited and subject to severe civil penalties under the Florida Keys National Marine Sanctuary and Protection Act. By practicing neutral buoyancy while diving and maintaining at least six feet of clearance above coral heads, adventurers help safeguard the fragile calcium carbonate foundations of North America's greatest underwater sanctuary.
On land, the park's Visitor Center features a 30,000-gallon saltwater aquarium showcasing native living corals, moray eels, and juvenile gamefish, providing non-swimming visitors and families an educational introduction to the reef. Boaters launching personal watercraft from the deep-water marina boat ramp must strictly obey marked daybeacon channels leading through Largo Sound and South Sound Creek, remaining within posted idle-speed zones to protect grazing West Indian manatees.
