Middle Island is a freshwater site located near channel marker C1 where Craddock Creek meets the Roanoke River. The topography features rocky drop-offs and an underwater tree line, providing a distinct environment for both divers and snorkellers. Depths range from 2 to 10 metres, with an average of 5 metres. Access is by boat only, situated 150 metres from the shore. Conditions include mild currents and visibility ranging from 2 to 8 metres. Water temperatures vary significantly, from 4 to 10 degrees Celsius in spring and autumn to the mid-20s Celsius in summer. Divers should be aware of boat traffic and potential entanglement hazards.

Turtle Island is a freshwater site located in the United States near Smith Mountain Lake. Accessible via a 1.4-mile hike, the area features a wooden footbridge leading to a small island with rocky outcroppings and a natural beach. The site is suitable for beginners, offering a shallow, rocky perimeter with depths ranging from 1 to 5 metres, averaging 3 metres. Snorkellers can explore the submerged timber and stones along the shore. Conditions include mild currents and visibility between 2 and 8 metres. Facilities available on-site include parking, toilets, showers, changing rooms, a rinse station, and guided tours. Be aware of boat traffic in the area.