sand key lighthouse

Sand Key Lighthouse stands at one of the Florida Keys' most important and historically rich reef systems — a remote offshore reef southwest of Key West marked since 1853 by one of the Keys' distinctive iron screw-pile lighthouses, and surrounded by some of the finest intermediate diving available in the lower Keys. The reef system around Sand Key extends to approximately 27 meters (about 90 feet) on its deeper outer margins, providing a full range of depth zones from shallow spur-and-groove formations to the deeper outer reef slope where larger species and more dramatic coral structure are encountered. The lighthouse itself — a classic example of 19th-century offshore construction technique adapted to Florida's hurricane coast — rises from the reef flat on its iron legs, and the structure below the waterline has become colonized by corals and encrusting organisms that add to the reef's complex habitat. The spur-and-groove reef system around Sand Key is in characteristically good health for the lower Keys, with impressive coral cover on the upper reef portions including stands of recovering staghorn coral, robust star and brain coral formations, and large sea fan communities that sway in the gentle current. The lower Keys reef system sees less diving pressure than upper Keys sites like Molasses Reef, giving Sand Key a quieter, more pristine character that appeals to divers seeking a less crowded experience of the Florida Keys reef ecosystem. Hawksbill sea turtles are particularly associated with Sand Key and the surrounding reef, feeding on the sponges and invertebrates that colonize the reef surface. Nurse sharks rest beneath coral ledges throughout the site. Large barracuda position themselves in the current-facing positions typical of their hunting strategy. Schooling jacks and Atlantic spadefish circle the reef structure. Access by boat from Key West dive operators.