Airport Beach on Elcho Island is a shore-accessible reef site featuring shallow depths between 5 and 7 metres, with an average depth of 6 metres. The site is suitable for intermediate divers, who must contend with moderate currents. Environmental hazards are significant; saltwater crocodiles are a serious danger in these waters, and the Northern Territory government advises against swimming at beaches. Additionally, box jellyfish are present from October to May. The dry season months from May to October offer the calmest conditions for visiting this coastal reef structure. Night diving is possible at this location, though local checks for crocodile activity are essential before entering the water.

Croc Rock at Elcho Island is a shallow shore dive and snorkel site suitable for beginners. Entry is made directly from the shore, with the best conditions found during the dry season from May to October. Divers and snorkellers should aim for early morning visits to ensure the calmest water. Visibility and currents are variable, requiring local checks before entering the water. The site features reef structures that support a variety of tropical marine life and invertebrates typical of the Northern Territory. Due to the site's location, there is a high risk of saltwater crocodiles, which represents a significant and potentially lethal hazard.

Cape Hotham is a reef site located off Elcho Island, offering shallow waters suitable for beginner divers. Access to the site is exclusively by boat. The topography consists of coral gardens that provide habitat for various reef fish and sea turtles. Conditions at this location are variable, with shifting visibility and currents, requiring attention to local briefings before entry. Water temperatures remain tropical throughout the year, ranging from 25C to 31C. Visitors should exercise extreme caution regarding marine life, as crocodiles are known to inhabit waterways in the East Arnhem region. The most reliable conditions for diving occur during the dry season months of June through September.