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.

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.

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.

Lloyd Neck is a shallow reef site in Long Island Sound, offering a shore entry suitable for beginner divers. The site features depths ranging from 2 to 6 metres with visibility typically around 5 metres. Divers should be aware of moderate currents that can strengthen, requiring careful planning to enter against the flow. Water temperatures fluctuate significantly throughout the year, ranging from 3C in winter to 23C in summer, necessitating appropriate thermal protection. Due to frequent boat traffic in the area, divers must use high visibility markers at all times. Parking is available on-site, though visitors should check local boating schedules as traffic increases during weekends and warmer months.

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.

Beach 8th Street in the Long Island Sound offers a varied underwater environment featuring muck, artificial reef, and natural reef sections. Divers navigate between four dive cages connected by marked lines, reaching depths of 5 to 6 metres with an average of 4 metres. This shore entry site is suitable for beginners, though conditions require careful planning as currents can be strong and visibility fluctuates between 1 and 6 metres. Divers must use a dive flag and plan for high slack tide. Hazards include boat traffic, entanglement risks, and jellyfish. Facilities at the site include parking and toilets, with typical dives lasting 60 minutes.

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.

The Iberia is a shipwreck located in Long Island Sound, situated approximately 4828 metres from shore. The site lies at depths ranging from 13 to 18 metres, with an average depth of 18 metres. The wreckage is split, with the sterncastle and rudder resting on the sea floor at a distance from the main section. Access to this site requires a boat. Divers should be prepared for variable currents and low visibility, which typically ranges between 3 and 5 metres. Given the depth, potential for entanglement, and overhead environment, this site is suited for intermediate divers. Night diving is permitted at this location.