Top Snorkeling and Scuba Diving in Long Island

Ready to check out the best sites in Long Island for scuba diving, snorkeling, shore diving, free diving or other ocean activities? Zentacle has 1 dive sites, snorkel spots, beaches, and more. Discover hand-curated maps, along with reviews and photos from nature lovers like you. No matter what you're looking for, you can find a diverse range of the best ocean activities in Long Island to suit your needs.
Long Island dive site map
Deans Blue Hole

#1 - Deans Blue Hole

Bahamas, Long Island

This is the world's deepest blue hole at 663' and is situated in a scenic location on an attractive and reef-protected cove with a white sand beach. The blue hole is immediately off the beach and half surrounded by overgrown beachrock cliffs. It is the location of the establishment of a new world's freediving record in April, 2007. At the surface the blue hole is about 200' in diameter. It funnels down into a narrower throat about 100' in diameter, opening again with increasing depth (~100) to resemble a bottle of Lancers in profile. Exotic non-native lionfish have been observed frequently in the blue hole environs. Nearby coves also provide Atlantic Ocean side reef/cove diving opportunities. Attached Blue Hole Cove has a scenic arcuate beach and is about half a mile long with a shallow fronting reef. Adjacent Turtle Cove provides a fronting forereef and backreef experience, a deeper channel through the reef and an interesting coral garden, starting just off the beach on the north half of the more than mile long cove. See One mile long, partially paved road over beachrock ridge leaves Queen's Highway to the east (Atlantic side) across from phone booth along highway. About 4 miles north of Clarence Town, Long Island, Bahamas. See Google Earth imagery for access details (not that difficult) through sparsely settled subdivision within a half mile of the blue hole.