Sound Beach is a shallow shore dive in Long Island Sound, featuring a mix of natural and artificial reef structures. The site is suitable for beginners, with depths ranging from 3 to 6 metres and an average depth of 4 metres. Divers should be prepared for strong currents and variable visibility between 5 and 10 metres. Entry requires caution due to surf, shore break, and potential hazards including sharp rocks and sea urchins. Protective footwear is essential. The area experiences significant boat traffic, so maintain awareness during your dive. Facilities at the site include parking, toilets, showers, changing rooms, and a rinse station.

Roanoke Point Ships is a shallow wreck site located in Long Island Sound, suitable for beginner divers. The wreckage lies at depths between 3 and 6 metres, approximately 50 metres from the shore. Divers can access the site via boat or a shore entry, though caution is required due to potential surf and shore break at the beach. Visibility ranges from 10 to 30 metres, though conditions can change rapidly. Water temperatures fluctuate significantly throughout the year, ranging from 4C to 22C, necessitating appropriate thermal protection. While the current is generally mild, it can increase, requiring divers to monitor local conditions closely before entering the water.

Cedar Beach in the Long Island Sound is a shore-entry reef site suitable for beginners. Divers can explore depths ranging from 2 to 15 metres, with an average depth of 15 metres. Conditions vary, with visibility between 2 and 15 metres and moderate currents. Water temperatures fluctuate significantly throughout the year, ranging from 3C in February to 21C in August. Typical dive times are approximately 40 minutes. The site supports a variety of temperate marine life and invertebrates typical of the region. Due to the location, divers should remain aware of boat traffic. Parking is available at the site, and guided tours are offered for those requiring assistance.

Smithtown Reef is an artificial reef and wreck site located in the Long Island Sound. The site sits at depths between 9 and 12 metres, with an average depth of 11 metres. It is accessible only by boat and is suitable for beginner divers. Conditions include mild currents and variable visibility ranging from 5 to 15 metres. Divers should maintain awareness of potential entanglement hazards when navigating the artificial structures and wreck elements. Typical dive times are approximately 40 minutes. Water temperatures fluctuate significantly throughout the year, ranging from 3C in February to 23C in August.

Duck Pond Point is a shallow reef site in Long Island Sound, offering a drift dive experience suitable for beginners. Located 200 metres from the shore, the site features depths between 3 and 5 metres with an average of 3 metres. Divers should be prepared for a surf break at the shore entry point and moderate currents throughout the dive. Visibility typically ranges from 3 to 5 metres. The habitat supports a variety of temperate reef fish and invertebrates. Parking is available on-site, and the average dive duration is 54 minutes. Always assess entry conditions carefully before crossing the shoreline.

Shinnecock Canal Jetty is an artificial reef located in the Long Island Sound, offering shallow depths between 2 and 4 metres. This site serves as a practical training area for beginner divers. Access is via the shore, though divers must exercise caution due to surf, surge, and a shore break during entry. Once submerged, the current is generally mild along the structure. Visibility typically ranges from 5 to 6 metres but remains variable. Due to heavy boat traffic in the area, the use of a surface marker buoy is essential throughout the 45-minute dive. On-site facilities include parking, toilets, showers, changing rooms, and a rinse station.

The Halftime is an artificial reef wreck located in the Long Island Sound, United States. Resting at depths between 18 and 25 metres, with an average depth of 21 metres, this site is strictly for advanced divers. Access is by boat only, situated 25 kilometres from shore. Divers must manage moderate currents during descent and ascent. The wreck structure presents a significant risk of entanglement, requiring careful navigation and appropriate safety gear. Water temperatures fluctuate between 5C and 18C throughout the year. Due to the nature of the site and potential for variable conditions, divers should maintain high situational awareness at all times.

Ponquogue Bridge is a shore-accessible drift dive site located in Hampton Bays. The site features an artificial reef structure beneath and around the bridge, with depths ranging from 0 to 10 metres and an average depth of 5 metres. Divers should be prepared for strong currents and variable visibility between 2 and 10 metres. Due to the nature of the location, hazards include boat traffic, potential entanglement, and surf. This site is suited for intermediate divers, with typical dives lasting around 35 minutes. Parking and toilets are available, though seasonal parking permits are required for access.