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.
It was the 14th June 2003, the ocean side of Flinders reef off beautiful Moreton Island just off Brisvegas, Queensland Australia ... The water was calm and clear (up to 15 metres visibility) ...