Finding somewhere to keep safe is one of the biggest challenges an animal faces. But some animals don't have to find a safe place - they build one. Chris reveals some of the best building animals in the world - a group that is incredibly varied. Accomplished animal architects include everything from beavers to bees and prairie dogs to bowerbirds. They don't only build homes, however - they also make structures to raise their young, store food, catch prey and impress mates. But what can be learnt from their building brilliance?
The volcanic Kamchatka peninsula is located on the far east of Russia. Because of the frequent volcanic eruptions and landslides, the terrain is constantly changing. But, despite the fact that the remote Kamchatka region is considered dangerous, it is unusually rich and fertile. Exploring the riches of this magical land, our film does not miss anything. In the frame - the golden eagles soaring in the sky, the wolverine, scavenge, the whole family of red foxes, and even the owners of these places - brown bears, happy to take baths in natural hot springs.
In the Land of the Cave Bear, Alice ventures to the parts of the northern hemisphere, hit hardest by the cold - Europe and Siberia. High in the mountains of Transylvania, a cave sealed for thousands of years reveals grisly evidence for a fight to the death between two staving giants, a cave bear and a cave lion. Yet Alice discovers that for woolly rhinos and woolly mammoths, the Ice Age created a bounty. The Mammoth Steppe, a vast tract of land which went half way round the world, provided food all year round, for those that liked the cold. It was these mammoths that Europe's most dangerous predators hunted for their survival.
A seahorse blends perfectly into its coral surroundings, while a male day octopus hides to avoid the female's cannibalistic impulses. Meanwhile, cuttlefish change color to both attract mates and ward off rivals. Explore the Gulf of Oman, a kaleidoscope of color coordination, starring the dazzling masqueraders of the Arabian Sea.