Maunalua Bay Artificial Reef - Corner C
Hawaii · Up to 21.6 m
A dive site in United States. The site reaches a maximum depth of about 22 m. The site is reached by boat.
IntermediateBoat entry
United States Dive Sites
1,024 mapped sites
Explore on mapBest dive sites in United States
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Sapphire Beach Reef Verified
U.S. Virgin Islands - St. Thomas · 0.5–5 m
Sapphire Beach Reef is a shallow beach-access snorkel/freedive area on St. Thomas near Red Hook. The useful underwater area is around the rocky outcrop and coral patches, with calm-water beach conditions common enough for casual snorkeling. This should not be imported as a scuba site without additional scuba-specific confirmation.
Shore entry
SS Henry Chisholm Wreck
Michigan · 6.1–45.7 m
The Henry Chisholm, a big wooden bulk freighter of 1880, ran onto Rock of Ages Reef in October 1898 — the same reef that claimed the Cumberland in 1877 — and her wreckage lies intermingled with the older steamer's in 20-80 ft of water. The highlight is her monstrous double-compound steam engine with drive shaft and propeller, which sits upright at the base of the rocky wall in about 150 ft, rising to roughly 110 ft. The combination of shallow archaeology and a dramatic deep engine dive makes this one of Isle Royale's classic sites.
AdvancedBoat entry
Madison Quarry
Alabama · 3–16.8 m
A city-owned flooded limestone quarry in Madison, Alabama, formerly operated as Madison Aquatic Park with a full-service dive shop. It was best known for sunken attractions including a NASA Minuteman missile, an F-4 Phantom jet, a Titan missile nose cone, houseboats, a fire truck, and training platforms, with a max depth of about 55 ft (average ~40 ft) and 20-30 ft visibility. The park closed to recreational use around 2019-2020 when its operator went out of business, and as of 2024 the fenced site sits abandoned while the city weighs proposals to turn it into a nature preserve.
Shore entry
Lake Pleasant
Arizona · 3–61 m
The Phoenix area's primary dive lake, a 10,000-acre reservoir in Lake Pleasant Regional Park reaching about 260 feet when full. Established dive areas include Vista Point, Sunset Ridge, the protected beginner cove east of the 10-Lane boat ramp (~30 ft), and the submerged Old Waddell Dam; shore dives commonly reach 60-100+ ft and boat dives can exceed 200 ft, making it a regional technical-diving venue. Winter visibility can hit 40-60 feet while summer drops to 5-10 feet.
IntermediateShore + boat
Squantz Pond State Park
Connecticut · —
A 288-acre lake separated from Candlewood Lake by a causeway, with a state park on its shore in New Fairfield that explicitly allows scuba diving along with swimming and boating. Diving is over a gently sloping freshwater bottom from the park's shoreline; it is a popular regional training spot with typically modest visibility.
Shore entry
The Scuba Ranch (Clear Springs Scuba Park)
Texas · 0–19.2 m
A 22-acre spring-fed quarry lake northeast of Terrell, about an hour east of Dallas, opened as a dive park in 2000 and rebranded as The Scuba Ranch. Underwater attractions include 'Sisco' the 50-foot shark sculpture, the S.S. Minnow cabin cruiser, a sailboat, a Cessna and six training platforms served by nine entry docks. A sharp thermocline near 20 ft drops temperatures into the 50s F below.
Shore entry
Dyer Cove (Two Lights)
Maine · 1.5–12.2 m
The cove below the Cape Elizabeth 'Two Lights' lighthouses, entered from a clear sand beach that gives way to rocky bottom and ledge slopes. The better dive follows the left-hand ledge toward the cove mouth where the terrain takes on an open-ocean feel; up to about 40 feet of depth is available in the bottom of the cove at high tide. Overhangs hide anemones, and a torpedo ray has been recorded here.
Shore entry
Turtle Canyon Reef Verified
Hawaii · 3–15.2 m
Boat reef off Waikiki/Honolulu known for Hawaiian green sea turtle cleaning stations on lava finger reefs and coral heads. It works for beginner scuba and is also used by snorkel/freedive boats in calm conditions. The main safety issue is surfacing/ascending around heavy boat, catamaran, canoe, and tour traffic.
Boat entry
S.A.L.T.
Texas · Up to 13.1 m
A dive site in United States. The site reaches a maximum depth of about 13 m. The site is reached by boat. Rated beginner based on available data.
Boat entry
SS Monarch Wreck
Michigan · 3–24.4 m
The Monarch was a heavily built Canadian wooden package freighter that smashed into The Palisades cliffs near Blake Point in a December 1906 snowstorm; most of her crew escaped to the ice-covered rocks. Large sections of her massively timbered hull lie scattered down the slope in roughly 10-80 ft of water beneath the cliff face, with artifacts like her famous bathtub photographed by NPS divers. A moderate-depth but exposed dive at the wild northeastern tip of Isle Royale — not to be confused with the tug Monarch in the St. Clair River.
IntermediateBoat entry