Cathedral in Fortescue Bay is a boat-accessible site defined by dramatic rock formations, caverns, and swim-throughs. Reaching depths of 7 to 40 metres, this advanced site requires precise buoyancy control to navigate narrow tunnels and overhead environments. Visibility fluctuates between 9 and 40 metres, with water temperatures ranging from 13C to 18C. Due to the cold water, deep profile, and potential for entanglement in kelp or structures, appropriate thermal protection and advanced training are necessary. Divers should be prepared for mild to strong currents. Guided charters are recommended for initial visits to understand local current patterns and site navigation.

Pirates Bay in Fortescue Bay features a diverse underwater topography including reef, kelp forest, caves, and wreck sites. The area offers a wide depth range from 3 to 45 metres, suitable for intermediate divers. Visibility varies significantly from 9 to 40 metres, influenced by swell and seasonal conditions. Access is strictly by boat, and divers must manage moderate currents, surge, and cold water temperatures ranging from 13C to 18C. Due to the presence of kelp, caves, and potential for low visibility, careful buddy contact and gas management are required. Night diving is permitted. Snorkelling is possible but rated 1/5 due to the site characteristics.

Fortescue Bay is a versatile shore dive on the Tasman Peninsula, offering a mix of reef, kelp forest, and wreck exploration. The site is suitable for beginners, with depths typically ranging from 3 to 18 metres. The bay is generally sheltered with mild currents, though surge can occur near the entry point depending on weather conditions. Visibility varies between 10 and 30 metres. Due to water temperatures ranging from 13C to 18C, a 7mm wetsuit or drysuit is recommended throughout the year. Facilities at the site include parking and toilets. Divers are advised to arrive early in the morning to avoid surface chop and increased surge.

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.

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.