This is a dive in the middle of the Port Phillip Heads Marine National Park. The plateau is a huge rocky platform in around the 16-meter range winding its way around the edge of the platform. This is the deepest water in Victoria, originally part of the river Yarra.

Spec Reef (aka Spectacular Reef) is part of the former Yarra River bed and lies in the South Channel, Port Phillip, Victoria. It is, therefore, subject to shipping traffic. The area is quite large and offers many different dive sites.

The Drop-off is located on the western end of Spectacular Reef, and consists of a series of walls thatplunge to over 60 meters in 5-10m increments. This makes it a great dive for all levels. Huge boulders the size of houses are scattered over the area, lying where the ancient Yarra River deposited them.

Lonsdale Wall is the remains of an ancient Yarra River gorge formed when sea levels were lower during the ice age. Now flooded between Point Lonsdale and Point Nepean, the one kilometre wall offers divers overhangs, canyons and ledges filled with diverse fish and invertebrate life.

Easy shore dive access. Quick walk from the car park into water. Depth 6-9m to ledges and swim throughs. Can be affected by swells and currents so divers must be cautious.

The Grotto is named after the many small caves and large overhangs that form this site. Located on top of the Lonsdale Wall system, this area is teeming with marine life and a photographers dream. This site gradually increases in depth to around 23 metres in a system of interesting rock formations and overhangs.

Devil’s Drop Off is one of the Melbourne’s most popular dive sites onits famous Lonsdale Wall. Devil’s Drop Off begins with a large drop-off from around 12 to 30 metres and continues with many ledges, overhangs and swim throughs.

Situated in the famous Sponge Gardens, Boarfish Reef lies approximately halfway between Queenscliff and Point Lonsdale. It starts in approximately 10 metres of water and gradually increases in depth to around 22 metres in a system of interesting rock formations and overhangs and swim-throughs.

Rip Bank is an impressive underwater cliff just outside the south-east side of Port Phillip Heads. This site should only be dived at slack water at the end of the flood tide, and only in calm conditions, as the current travels along the wall and can become extremely fast.

Foggy Reef sits at the southern-most end of the Lonsdale wall system. The top of the wall is a great dive for beginners as it is around 8 meters deep. If you swim northeast you will find the edge of the wall. This site is part of the Port Phillip Heads Marine National Park.