Journey to Australia's southern ocean and uncover one of its best-kept secrets - a natural phenomenon called the "Bonney Upwelling" that sparks a feeding frenzy all the way up the food chain to the planet's largest living creature, the Blue Whale.
Of all the books I have ever read on Australian dive sites all of them list South West Rocks, more specifically Fish Rock Cave in New South Wales as a premier diving spot with the longest underwater sea cave in the Southern Hemisphere and of course the resident Grey Nurse Sharks.