Portsea Hole is a wall dive located 500 metres offshore near Sorrento, Australia. The site features a dramatic wall dropping from shallow reef to a depth of 30 metres, with an average depth of 15 metres. Due to strong currents, this site is strictly for advanced divers and must be conducted at slack water. Visibility typically ranges from 5 to 10 metres. Access is by boat only, and divers must remain vigilant regarding boat traffic. Water temperatures fluctuate between 13C and 18C throughout the year. Facilities including equipment rental, air fills, and boat charters are available nearby.

Portsea Pier is a shore-accessible site in Sorrento, Victoria, featuring a mix of artificial reef structures, natural reef, kelp forest, and seagrass. Divers and snorkellers can explore the pier pylons at depths ranging from 2 to 7 metres, with an average of 4 metres. The site is suitable for beginners, though conditions vary significantly. Strong tidal currents are a primary hazard, particularly near the entrance to Port Phillip Bay, necessitating careful planning around slack water. Visibility ranges from 5 to 25 metres, though the silty bottom can reduce clarity. Boat traffic is a constant risk, making the use of a surface marker buoy essential for safety.

Franklin Point in Sorrento is a shore-based drift dive featuring a reef and kelp forest environment. The site ranges from shallow depths down to 33 metres, with an average depth of 23 metres. Divers experience strong tidal currents, making this an intermediate-level site that requires careful planning around slack water. Visibility typically spans 10 to 30 metres. The area is subject to surf and high boat traffic, particularly during summer. Access is via a shore entry located 70 metres from the point. Divers should coordinate their entry and exit with the tidal flow to manage the current effectively.

Quarantine Station Wall is a shore-entry drift dive located in Sorrento, Australia. The site features a vertical wall ranging from 12 to 20 metres in depth. Divers experience moderate currents that carry them along the wall, with visibility typically between 10 and 30 metres. While suitable for beginners, the site requires careful planning due to the potential for strengthening currents and significant depth. Species recorded around this area include Giant Cuttlefish, Weedy Seadragon, Pot-bellied Seahorse, Blue-ringed Octopus, Fiddler Ray, Stonefish, Chromodoris Nudibranch, Western Blue Devil, Smooth Ray, Bobtail Squid, Long-nosed Fur Seal, Port Jackson Shark, and various wrasses.

Queenscliff Bottle Drift is a drift dive located in the deeper waters of Port Phillip Heads near Sorrento. The site features a reef topography with depths ranging from 18 to 26 metres. Divers experience moderate currents, making this an intermediate-level dive best suited for those comfortable with drift procedures. Visibility typically ranges from 10 to 20 metres. Due to high boat traffic and shifting currents, boat access and guided tours are required. Species recorded around this area include Weedy Seadragons, Giant Cuttlefish, Fiddler Rays, and Western Blue Devils. Water temperatures fluctuate between 13C and 19C throughout the year, necessitating appropriate thermal protection.

Chimanan's Hat is an artificial reef located 3000 metres offshore from Sorrento in the South Channel of Port Phillip Bay. This site features shallow depths ranging from 1 to 12 metres, with an average depth of 4 metres, making it suitable for beginners. Access is strictly by boat. While the area is generally calm, it is situated within a shipping channel, necessitating caution regarding boat traffic and the use of a delayed surface marker buoy. Tidal currents can occur, though they are typically mild. Water temperatures fluctuate between 13 and 19 degrees Celsius, requiring a wetsuit year-round. Divers should be aware of potential hazards including jellyfish and local marine life interactions.

The Rip is a challenging site located at the entrance to Port Phillip Bay near Sorrento. This area features a mix of natural reef, wall, and artificial structures. While the Popes Eye structure provides sheltered conditions, the surrounding area is defined by strong tidal currents reaching 5 to 8 knots. Divers encounter Long-nosed Fur Seals, Blue Throated Wrasse, Butterfly Perch, Old Wife, and various sea stars. Other species include Stonefish, Shaw’s Cowfish, and Clown Doris. Depths range from 1 to 60 metres, with an average of 8 metres. Boat access is required, and conditions demand caution due to heavy boat traffic and rapid weather changes.

Popes Eye is a partially submerged, circular stone structure located in Port Phillip Bay. Serving as an artificial reef, the site features depths ranging from 1 to 12 metres, with an average depth of 8 metres. It is accessible only by boat and is suitable for beginners. While the interior of the annulus provides protection, strong tidal currents reaching 5 to 8 knots can occur outside the structure. Divers should remain aware of boat traffic on the surface. Visibility varies from 5 to 25 metres, and water temperatures fluctuate between 13C and 19C, necessitating a full exposure suit year-round.