Tasman Peninsula, TAS
The route between the Second and Outer Sister features sheer rock walls covered in gold zoanthid anemones, soft corals, sponges and dense sea whip gardens at depth. Big schools of fish congregate on the pinnacles. Exposure and current make this an experienced-diver site, run only on calm easterly conditions.
Visibility at Sisters Rocks typically ranges from 15 to 25 metres, though it shifts with swell, wind and recent rainfall. December to April generally offers the best conditions for diving here.