Lincoln Beach is a historical site in the United States featuring submerged concrete structures and remains of old pools. This artificial reef and wreck site is suitable for advanced divers due to strong currents and low visibility, which typically ranges between 2 and 3 metres. Depths vary from 3 to 20 metres, with an average of 7 metres. Entry is via the shore. The environment supports a variety of regional marine life and invertebrates typical of the habitat. Divers should be aware of potential hazards including cold water, strong currents, and overhead environments. Snorkelling is not recommended at this location.

Pontchartrain Beach is an artificial reef site located in the United States. The area features a sandy bottom interspersed with submerged riprap and old structural remains. Snorkelling here is generally suited for intermediate participants due to moderate currents and variable visibility ranging from 1 to 3 metres. The site is accessed via a shore entry, with depths typically between 1 and 5 metres, averaging 3 metres. Hazards at this location include surf, strong currents, and the presence of crocodiles. Please note that the site is currently officially closed to the public.