Episode 6: "BEYOND THE GLASS" INSIDE, OUT OF THE WORLDS LARGEST AQUARIUM: Sydney and Lord Howe Island (Australia) The Quest team join experts from one of the world's largest aquariums and together they embark upon a fascinating expedition to collect some of the ocean's more unusual creatures. Andrew and Liz become integral players in the capture of a mature female shark, which develops into a race against time to release this awesome creature from the specialised tank aboard their vessel to the safety of the aquarium some seven hours away.