The Gwendolyn Steers is a shipwreck located 2000 metres off the coast of Long Island in the Long Island Sound. Resting at depths between 6 and 30 metres with an average of 15 metres, this artificial reef is accessible only by boat. Divers encounter mild currents, though visibility is variable, ranging from 5 to 15 metres. The site requires intermediate skill due to potential surge and swell, particularly in the shallower sections. Boat traffic is frequent in the area, necessitating the use of a surface marker buoy during ascents. Guided tours and boat charters are available through local dive shops to support site planning and access.

Bayville Barge is a shore-accessible wreck site located in the Long Island Sound. The structure sits at depths between 20 and 25 metres, providing a manageable wreck experience for beginners. Divers encounter mild currents, though visibility is highly variable, ranging from 2 to 30 metres. Due to the potential for low visibility and boat traffic, the use of a surface marker buoy is essential. Water temperatures fluctuate significantly throughout the year, from 3C to 20C. The site features a mix of wreck and muck topography, with kelp growth present on the structure. Divers should remain aware of the presence of sharks when exploring the wreckage.

Prybil Beach is a shore-entry reef dive in Long Island Sound with a maximum depth of 8 metres. This site is suitable for beginners, though conditions require careful planning due to moderate currents and variable visibility. Divers should remain alert for boat traffic when entering and exiting the water. The reef environment supports a variety of temperate marine life and invertebrates typical of the region. Water temperatures fluctuate significantly throughout the year, ranging from 5C in winter to 22C in summer. Divers are advised to check local visibility and current reports before planning a dive, as these factors can change the site's accessibility.

Green Ledge Lighthouse in Long Island Sound serves as an artificial reef, providing a distinct diving environment around the lighthouse structure. The site reaches depths between 3 and 21 metres, with an average depth of 3 metres. Access is exclusively by boat, as the location sits 1609 metres from the shore. Divers should anticipate moderate currents and remain cautious of boat traffic and potential entanglement hazards. The habitat supports a variety of temperate marine life, including reef fish and invertebrates typical of the region. Due to the prevailing conditions and navigation requirements, this site is suited for intermediate divers.

Morgan Park Jetty is a shore-accessible artificial reef located in the Long Island Sound. This site features shallow depths ranging from 3 to 10 metres, making it a suitable location for beginner divers. Divers can expect mild currents and visibility between 3 and 10 metres. The water temperature fluctuates significantly throughout the year, ranging from 5 to 21 degrees Celsius, requiring appropriate thermal protection. As this is an active area, divers must remain vigilant regarding boat traffic at all times, particularly during entries and surface intervals. Typical dives at this location last approximately 40 minutes.

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.

Orchard Beach is a shallow shore dive in Long Island Sound, featuring a mix of muck and reef habitats. With an average depth of 1 metre and a maximum of 2 metres, this site is suitable for beginner divers. Entry is from the shore, though divers must remain cautious of rip currents and variable visibility. Managing buoyancy is essential to avoid stirring up sediment from the muck bottom. The site is well-supported by facilities including parking, toilets, showers, changing rooms, and a cafe. Divers should check local current reports before entering the water, as conditions can change quickly.

Penfield Lighthouse in the Long Island Sound is an artificial reef site suitable for intermediate divers. The site features depths ranging from 6 to 10 metres, with an average depth of 7 metres. Access is via shore, though the site is located 1770 metres from the coast. Divers should be prepared for strong currents and variable visibility between 2 and 6 metres. Water temperatures fluctuate significantly throughout the year, ranging from 3°C in February to 22°C in August. Hazards at this location include boat traffic, entanglement risks, and surf. Facilities available near the site include parking and a cafe. Typical dive times at this location are approximately 45 minutes.