Journeying through Australia's three surrounding oceans and islands, we discover an explosion of life in the spectacular southern sea, sanctuary of the Pacific and Indian Ocean with its awe-inspiring predators.

The force of human induced change has been rapid & dramatic, so animal populations have reacted in rapid & dramatic ways. In this episode we meet Australia's contemporary success stories, & those being left behind.

We move from the continent's snow-covered peaks to its ancient rainforests and tropical savannahs to discover how it is that animals have learnt to thrive across the continent’s harsh and beautiful extremes.