Brownstone Exploration and Discovery Park is a quarry dive site in the United States featuring an artificial reef structure. The site offers a controlled, current-free environment suitable for beginners, with depths ranging from 7 to 34 metres. Divers can choose to remain in the shallower sections or explore deeper areas depending on their certification limits. Visibility at the site typically ranges between 5 and 10 metres. Shore entry makes logistics straightforward, and the park provides full facilities including equipment rental, changing rooms, and a cafe. Divers should monitor their depth gauges closely to avoid exceeding planned limits, as the site reaches depths of up to 34 metres.

Brownstone Quarry is a freshwater artificial reef site located in the Long Island Sound area. Divers and snorkellers can access the water via the shore. The site features depths ranging from 5 to 30 metres, with an average depth of 5 metres. Visibility typically fluctuates between 3 and 9 metres. Divers should be aware of significant thermoclines throughout the water column and potential entanglement hazards. The site is suitable for beginners and supports night diving. On-site facilities include parking, toilets, changing rooms, air fills, equipment rental, a cafe, and gear storage. The habitat supports various temperate freshwater fish and invertebrates typical of the region.

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Orbit is a combined reef and wreck site located in the Long Island Sound. Divers can explore depths ranging from 6 to 26 metres, with an average depth of 18 metres. Access is strictly by boat, and the site is suited for intermediate divers due to moderate currents and variable visibility between 1 and 5 metres. Water temperatures fluctuate significantly throughout the year, ranging from 3C to 20C, necessitating appropriate thermal protection. Given the low visibility and potential for entanglement within the wreck structures, divers should maintain close proximity to their team and carry a torch and compass. Air fills and equipment rental are available locally.

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.