Rock Key

Rock Key is a coral reef located approximately 7 miles (11 km) south of Key West, Florida, and is part of the Florida Keys Reef Tract, the third-largest living coral barrier reef in the world. The site is a well-rounded reef known for its coral fingers, fish-filled gullies, and coral canyons, and is frequently visited alongside nearby reefs such as Sand Key and Eastern Dry Rocks.

The reef reaches a maximum depth of around 33 feet (9.9 m), with shallower areas suitable for snorkeling as well as diving. The terrain is characterized by coral formations and gullies that create a varied underwater landscape well suited to exploration and underwater photography.

Rock Key supports diverse marine life including stony corals and schools of tropical fish. The site's clear waters and coral structure make it a consistent destination for both divers and snorkelers throughout the year. Water temperatures range from around 21–31°C (70–88°F) depending on the season, and visibility is generally excellent, often exceeding 21 m (70 feet).