The Best Episodes Directed By Nick Easton

Sir David Attenborough explores the dangerous frontiers created by the world’s coasts, where animals fight for survival amidst constant change.

In Ruaha, Tanzania, lions form huge super prides in order to hunt giants. Amongst cats lions are unusual, the only one to live in groups. In numbers they find the strength and audacity to hunt the most formidable prey.

Fresh water is the lifeblood of planet Earth, where incredible animal dramas play out. From death-feigning fish to frogs that glide, each depends on fresh water for their survival.

New Zealand was one of the last land masses to be found and settled by people. Lush and fertile, almost everything brought here flourishes, often with surprising consequences. Told through the experiences of its native species - in particular, a charismatic and peculiar giant, flightless parrot - this is the moving story of the changing fortunes of New Zealand's wildlife since humans first arrived.

The penultimate episode opens in the cedar forests of the Atlas Mountains, where Barbary macaques have become isolated from other primates by the expanding Sahara. Aerial photography shows the Sahara is a landscape dominated by rock. Animals featured include Grévy's zebra, addax and naked mole rats, each found on the desert's fringes. Two million barn swallows are forced to cross the Sahara on their migrations, congregating at a poisoned oasis to feed on flies. The last remaining freshwater pools are home to stranded desert crocodiles, filmed hunting tilapia fish. Macro photography reveals the struggles of dung beetles and silver ants, the latter able to survive exposure to the brutal midday sun thanks to their reflective body coating. Eye to Eye shows how an 18-month time lapse sequence of Libya's sand dunes was filmed.

The secret lives of the worlds most mysterious cats are brought to light by advances in remote and low-light filming technology. In South Africa, we follow the nocturnal pursuits of the tiny black-footed cat that stakes its claim to the title of the world's deadliest, and in remotest Mongolia we reveal the rarely seen Pallas's cat, at home with her kittens - she hunts by looking like a rock. Finally, in South Africa, we uncover the secret of the serval that thrives amongst the futuristic landscape of Africa's biggest industrial complex. These are remarkable cats, with surprising lives in extraordinary places.

Scientists are studying cats in more detail than ever before, and what they are discovering is truly groundbreaking. Join the scientists in the field, testing new theories and challenging the conventional ideas about cats. New approaches and new technologies are allowing an intimate look at their previously hidden lives.