As part of the Port Phillips Heads Marine National Park Foggy Reef is at the very southern end of the Lonsdale Wall.
If you are a bit of a scavenger hunter you can go looking for the two old cannons or the huge anchor that are embedded in the wall.
The top of the reef is around 8 meters. Swimming east from the shot you will find the edge wall, dropping over the wall you can descend to around 25 meters. From this point if you follow the wall to the south it will curve around to the east.
About 20 meters from where you go over the wall there will be a huge old admiralty anchor embedded in the wall. Directly opposite this site lying in the sand are 2 old cannons. Unfortunately the sand movement in this area means that sometimes the cannons are buried. After you have had a look around turn back the way you came and follow the wall north for the rest of your dive. Check out the amazing overhangs undercuts and the amazing soft corals and sponges that are prolific in this area.
Certification required: Open Water 18m