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.

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.

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.