Features the highs and lows of the animals that inhabit Antarctica and its waters.

Asia is the largest and most extreme continent on our planet, stretching from the Arctic Circle in the north to the tropical forests on the equator. The animals here face the hottest deserts, tallest jungles and highest mountains found anywhere on Earth. But the continent has not always looked like this. These extreme worlds were created when India collided with the rest of Asia 30 million years ago, shaping the continent as we know it today. Animals here have adapted to the extreme environments in almost unbelievable ways. In the frozen lands of the Kamchatka.

South America - the most species-rich continent on earth. From the volcanoes of the Andes to the world's largest rainforest, animals here must specialise to carve out a niche.

Australia, a land cast adrift at the time of the dinosaurs. Isolated for millions of years, the weird and wonderful animals marooned here are like nowhere else on Earth.

Europe - a continent transformed by mankind, where extraordinary animals are found in surprising places.

In winter, lynx prowl the snowy Yukon for snowshoe hares, whilst Florida manatees seek hot springs to escape the freeze. In the creeks of Tennessee, fish build spectacular underwater pyramids to find a mate.

Africa - Home to the greatest wildlife gatherings on Earth. But even in this land of plenty, wildlife faces huge challenges. At its heart is a vast tropical rainforest full of life. Here young chimpanzees learn how to use tools to make the most of the jungles riches. With knowledge passed down from generation to generation, they can access the best forest foods. Rivalling the jungle for it sheer abundance of life is Africa's Great Rift Valley.

The most spectacular moments from the series, highlighting the incredible rich and wonderful diversity of life found on the planet's seven unique continents. Millions of years ago huge forces ripped apart the Earth's crust, creating seven distinct continents. Over time, each one developed its own remarkable wildlife.