The underwater trail at Fortescue Bay follows a sandstone reef in shallow, sheltered waters. Reaching a maximum depth of 6 metres with an average of 3 metres, this site is suitable for beginners. The reef is characterised by kelp-covered structures and sandy patches. Divers and snorkellers enter from the shore, though caution is required due to slippery rocks and potential wave surge near the cliffs. Access is safest within two hours of low tide. Water temperatures range from 12C to 17C, making a wetsuit necessary throughout the year. Visibility is variable, ranging from 12 to 40 metres depending on local weather and swell conditions.

Fossil Cove in Fortescue Bay is a shore dive characterised by a dense kelp forest and shallow reef topography. Divers navigate depths between 1 and 10 metres, with an average depth of 7 metres. The site features a rock archway and wave-cut platforms, which are best explored at low tide. Entry requires a shore dive technique to manage potential breaking waves. Visibility varies significantly from 5 to 30 metres depending on swell conditions. Due to the cold water temperatures ranging from 12C to 17C, a 7mm wetsuit with a hood is recommended. Access involves a track with steep steps, and parking is available on site.

Boronia Beach in Fortescue Bay offers a shallow, sheltered reef environment suitable for beginners. Divers and snorkellers can explore depths ranging from 3 to 10 metres, with an average depth of 5 metres. The site features mild currents and visibility typically between 5 and 8 metres. Access is via the shore, with parking and toilets available nearby. Due to the water temperatures, which range from 12C to 17C, a thick wetsuit or drysuit is recommended. Be aware that sections of the foreshore are considered dangerous. Night diving is permitted at this location.

Ninepin Point on Bruny Island is a sheltered shore dive featuring a reef and kelp forest environment. Divers navigate depths between 3 and 10 metres, with an average depth of 7 metres. The site is characterised by a tannin-rich freshwater surface layer that significantly reduces visibility, often creating conditions similar to a night dive. Divers should be prepared for cold water temperatures ranging from 12 to 17 degrees Celsius. Due to the low visibility and overhead environment, this site requires careful planning. Parking is available at the entry point. While suitable for beginners, the challenging light conditions and cold water necessitate appropriate thermal protection and the use of a torch.

Turrakana is a shallow reef and kelp forest located in Fortescue Bay, Tasmania. The site ranges from 0 to 10 metres in depth, with an average of 3 metres, making it accessible for beginners. Visibility varies between 9 and 30 metres. Divers and snorkellers can access the site from the shore or by boat. Due to the cold water temperatures of 12 to 17C, a thick wetsuit is essential. Conditions can change rapidly, with moderate currents and potential surge. Facilities at the site include parking, toilets, showers, changing rooms, and a rinse station. Guided tours are available, and night diving is permitted.

Crescent Bay in Fortescue Bay is a shallow shore dive suitable for beginners. The site features a reef environment with an average depth of 4 metres, ranging between 2 and 6 metres. Divers can expect visibility between 12 and 30 metres. As an exposed beach on the Tasman Peninsula, the site is subject to ocean swell, surf, and rip currents. Water temperatures are cold, ranging from 12C to 18C, necessitating appropriate thermal protection. Facilities at the site include parking, toilets, and showers. Divers should exercise caution during shore entry and exit due to potential surge and surf conditions.