1,024 mapped sites
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Hawaii · 1–7.5 m
Prince Kuhio Beach/Park is a shallow south-shore Kauai reef pocket best known for snorkeling and turtle encounters, with scuba possible for divers comfortable with a rocky, shallow entry. It is not a deep or high-volume scuba site; treat it as a calm-condition shore reef/snorkel spot. Koloa Landing is usually the easier nearby scuba option.
Puerto Rico - Desecheo/Rincón · 3–40 m
Boat-only offshore island dive area with clear water, walls, caves, and reef around Desecheo National Wildlife Refuge. Divers and snorkelers use the surrounding waters by charter, but the island itself is closed/off-limits. Site choice and depth vary, so use local operator conditions rather than treating one pin as a precise mooring.
Delaware · 14–20 m
YC-725 was a 251-ft, 2,344-ton steel vessel built in 1918 at Globe Shipbuilding in Superior, Wisconsin (originally the Contoocook, later Elda) and finished her career as a U.S. Navy open lighter barge. She was sunk in 1946 and lies on what is now Delaware Artificial Reef Site #10 in about 60 ft of water, 5.5 nautical miles from Indian River Inlet, where her mussel-covered hull holds sea bass and tautog.
California · Up to 19.8 m
Artificial reef built from Quarry Rock
South Carolina · Up to 14 m
Artificial reef built from 45' Tugboat (Duane Merritt)
U.S. Virgin Islands · 6–18 m
Broken-up WWII-era freighter/artificial-reef style wreck near Buck Island, St. Thomas. The wreck lies in several sections with visible engines, coral/sponge growth, and fish life, making it a novice-to-intermediate boat wreck in good conditions. No penetration should be expected because the wreck is fragmented.
Florida · 1.5–15.2 m
Ginnie Spring is the flagship spring of the privately owned Ginnie Springs Outdoors park on the Santa Fe River and one of the most famous freshwater dive sites in the USA. Open water divers can enter the Ballroom, a large grated cavern reaching about 50 ft with exceptional clarity, while the adjacent Devil's Eye/Devil's Ear system offers world-class cave diving for certified cave divers. The park offers camping, on-site air/nitrox fills, gear rental and 24-hour diving for guests.
Florida · 1.8–27.4 m
Molasses Reef is one of the most heavily dived spur-and-groove coral reefs in the world, sitting at the seaward edge of the Florida Keys National Marine Sanctuary off Key Largo. Marked by its iconic light tower, the reef offers more than 30 mooring-buoyed sites from 6-ft snorkel gardens to 90-ft outer ledges, with named features like Hole in the Wall, Winch Hole and the Aquarium. Mild current along the outer edge makes for easy drift dives, and fish life is exceptional thanks to decades of no-take protection.
New Jersey · 20.1–22.9 m
Artificial reef built from 20 Reef Balls (clump) - (near tugboat "Colleen"- ID 4) NJDEP deployment record: Ship, material: 92' Tugboat - "Colleen" , deployed 1996.
Hawaii · 18.3–37.5 m
Deep artificial-reef wreck off Honolulu/Waikiki, usually done as an advanced boat dive. The upright cargo/fishing vessel has open deck/cargo areas, coral growth, and frequent turtles, sharks, rays, snapper, and macro life. Limited penetration should be treated as training- and guide-dependent, not casual sightseeing.
Alabama · Up to 21 m
The CSX Boxcars are railcars deliberately sunk as an artificial reef about 18 miles offshore from Orange Beach, lying in roughly 70 ft of water. The structures attract a variety of reef fish and make an accessible mid-depth dive.
Florida · Up to 33.5 m
Artificial reef built from 165' Steel Ship, the "M/V Tortuga"