Part 2. 1500 km south of the Great Barrier Reef, the NSW coastline is home to a diverse mix of tropical and temperate marine ecosystems, from manta rays to fur seals, caves with sharks, wrecks and strange marine critters, and marine life yet to be discovered. Go on, take a dive soon. Filmed 2000-2005. In part 2, go down on a wreck, penetrate a cave, and come out the other end into a school of grey nurse sharks. Sharks filmed on location at South West Rocks, Sydney and Solitary Islands Marine Reserve.