Australian Diving Instruction

The J4 Submarine is a WWI wreck in the Victorian Ships’ Graveyard, lying north–south on a rocky seabed. Divers can enter through several hatches, though the shallow depth makes it prone to strong surge. When conditions are right, the clear, silt-free interior offers one of Melbourne’s best dives.

The Coogee shipwreck lies about 4 km offshore between Point Lonsdale and Barwon Heads on a flat limestone and sand seabed. Facing north toward shore, the bow rests at 33 m and the stern at 35 m. The bow and stern remain intact, while much of the midships section is flattened or missing.

Castle Rock is located outside the Port Phillip Heads in approximately 18 metres of water. It sits on a sandy bottom and rises to around 12 metres. The rock is around 200m in circumference, has many overhangs, walls and swimthroughs, and can be circled several times in a dive.

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.

The Ozone wreck is located off the coast of Indented Head, Victoria, Australia . It is a retired Port Phillip paddle steamer that was sunk in 1925 to form a breakwater The wreckage of the Ozone remains visible about 50 meters offshore at Indented Head and is an easy shallow dive 3. It is a distinctive landmark.

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.