Recognized by its historic red iron lighthouse rising above the turquoise waters, Sand Key Reef is one of the most popular destinations for Key West diving and snorkeling. Located about seven miles southwest of Key West, this protected reef is part of the Florida Keys National Marine Sanctuary and the Sand Key Sanctuary Preservation Area. The reef features an impressive spur-and-groove coral formation, where colorful coral ridges are separated by sandy channels that create an exciting underwater playground for both snorkelers and scuba divers.
Sand Key in Key West offers something for every experience level. The shallow reef is ideal for snorkeling among tropical fish, sea fans, and vibrant coral gardens, while the deeper southern ledges provide outstanding scuba diving opportunities in depths ranging from about 40 to 65 feet. Divers frequently encounter sea turtles, nurse sharks, southern stingrays, barracuda, angelfish, parrotfish, and countless other reef species. Because the reef is protected, its marine life continues to thrive, making every visit a unique adventure beneath the crystal-clear waters of the Florida Keys.
Sand Key is a spectacular place to snorkel or dive in Key West. It’s great for everyone! It’s a great destination in Key West for underwater photography and one of the premier Key West diving location. We made a list of the why’s for you!
- Historic Sand Key Lighthouse, built in 1853, serves as one of Key West’s most recognizable offshore landmarks.
- Located approximately 7 miles southwest of Key West.
- Part of the protected Florida Keys National Marine Sanctuary and Sand Key Sanctuary Preservation Area.
- Famous for its beautiful spur-and-groove coral reef formations.
- Excellent for both Key West snorkeling and Key West scuba diving.
- Shallow coral gardens are perfect for beginners and families.
- Ocean-side ledges provide exciting dives in depths of approximately 40–65 feet.
- Marine life commonly includes sea turtles, barracuda, angelfish, parrotfish, butterflyfish, nurse sharks, southern stingrays, and colorful tropical reef fish.
- Excellent underwater visibility on calm days, often making it a favorite for underwater photography.
- More than 20 mooring buoys protect the reef by eliminating the need for boats to anchor on fragile coral.
- Every visit is different because Sand Key naturally shifts and changes shape with weather and ocean conditions.
Please avoid touching, standing on or collecting coral. Secure loose belongings before entering the water and follow all instructions provided by the captain and crew.
Certified divers should arrive prepared with the documentation and personal items needed for a safe and comfortable day of Key West diving:
Certified divers should arrive prepared with the documentation and personal items needed for a safe and comfortable day of Key West diving:
- Scuba certification card or digital certification
- Dive logbook, pecially when returning after time away from diving
- Swimsuit
- Reef-friendly sunscreen
- Refillable water bottle
- Rash guard or appropriate exposure protection
- Personal mask, dive computer or other preferred equipment
- Waterproof camera with a secure attachment
- Dry bag for clothing and valuables
- Light jacket or windbreaker
- Seasickness medication, when needed
- A change of dry clothes
- Cash or card for gratuities, rentals and purchases
- Any required personal medications
Divers should confirm what rental equipment is included when making their reservation. Remember to allow at least 24 hours between scuba diving and flying. Lost Reef Adventures also asks divers to bring their certification card and logbook.
- Approximately 30 years of local expertise: Lost Reef Adventures brings decades of experience exploring the reefs and wrecks surrounding Key West.
- Official PADI 5-Star Dive Center: Lost Reef is recognized as a PADI 5-Star Dive Center and offers professional scuba instruction and certification programs.
- Full-service Key West dive shop: Guests can arrange dive trips, snorkeling excursions, scuba instruction, equipment rentals, air fills and nitrox services in one convenient location.
- Twice-daily excursions: Morning and afternoon departures provide visitors with more flexibility when planning their Key West vacation.
- Experiences for different skill levels: Lost Reef welcomes snorkelers, newly certified divers and experienced scuba divers seeking reef or wreck adventures.
- Professional scuba training: Programs include Discover Scuba experiences, checkout dives and PADI certification courses.
- Knowledge of local dive sites: The team knows the reefs, wrecks and seasonal conditions surrounding Key West and selects destinations according to the day’s conditions.
- Small-group diving opportunities: Smaller groups can provide a more personal experience and more individual attention.
- Equipment available onsite: Scuba and snorkeling equipment is available for rent or purchase through the full-service shop.
- Convenient marina location: Lost Reef Adventures is based at the Key West Bight Marina in the Historic Seaport, making it easy to reach from Old Town.
- Safety-focused preparation: Guests receive instructions and guidance from trained professionals before entering the water.
- A complete Key West underwater experience: From first-time snorkeling to advanced reef and wreck diving, Lost Reef Adventures helps visitors discover the marine environment that makes the Florida Keys famous.