Milln Reef offers a number of exciting dive sites such as Whale Bommie, Petaj, Swimming Pools I and II and the Three Sisters to name a few. At both Swimming Pool sites, you can expect to see schools of Diagonally Banded Sweetlips and Nudibranchs. There are some excellent wall and swimthrough sites in the area that also make fantastic night dives. Some of the walls are full of sleeping Parrot Fish still in their mucus sacks. Turtles, Barracudas and Bull Rays are often in the same areas. Whale Bommie is a perfect depth dive site with some places in excess of 20M. This is also a great site at night with sleeping Turtles, Reef Crabs and Painted Lobsters amongst numerous soft corals and Gorgonian Fans.