Second Point is a freshwater site in the United States offering a gravel shore entry and a gentle slope. The topography includes submerged platforms and a treasure chest structure, making it a suitable location for beginners. Divers typically experience depths between 4 and 9 metres, with an average of 8 metres. Visibility is variable, ranging from 1 to 5 metres. A thermocline exists at approximately 6 metres, where water temperatures drop to 15.5C. During summer, surface temperatures range from 18 to 24C. Hazards include cold water, entanglement risks, and low visibility. Parking is available for visitors, and the site is also accessible for snorkelling.

Governor's Island is a peninsula on the north shore of Lake Mendota, United States, characterised by high rocky bluffs. The site offers a vertical underwater environment where the lake floor drops to depths of 25 metres, with an average depth of 8 metres. Snorkellers access the water from the shore. Conditions are variable, with visibility typically ranging between 2 and 6 metres. Due to the depth and potential for cold water and thermoclines, this site is suited for intermediate snorkellers. Parking is available for visitors. The site is rated 3 out of 5 for snorkelling activities.

Devil's Lake is a freshwater dive site located in the United States, offering shore access for divers. The site features an artificial reef structure with depths ranging from 7 to 18 metres, averaging 7 metres. Visibility at the site typically spans 5 to 10 metres. Water temperatures fluctuate significantly, ranging from the low 30s°F in winter to the mid-70s°F during summer months. A 7mm wetsuit is generally recommended for dives between May and October. Divers should be aware of hazards including deep water and potential entanglement. Facilities available at the site include parking and toilets.