Rob and team embark on a mission to fish from the shallowest parts of an estuary, just knee deep, into the ocean and past the continental shelf where it is over 1000 fathoms deep. Along the way they find remarkably different habitats and fish that have developed unique features in order to survive in those habitats. Set amongst the backdrop of some of Australia's most beautiful coastlines join Rob as he fishes from the shallows to the deep.