If you look at a map of Tasmania, you'll find Lake Fanny. Dive in and get wet.
Probably boringly named after a lass named Fanny, this lake is located in the remote Walls of Jerusalem National Park in central Tasmania. Walls of Jerusalem was so-named because the geographic features supposedly resemble the walls in Jerusalem. You can find various biblical placenames in the area like Herods Gate, Lake Salome, Jewels of Solomon, Zion Hill, Damascus Gate, King Davids Peak and the Pool of Bethesda.
(Tasmanian Wilderness Experiences)