Bobby Tulloch, the Shetland Islands warden of the Royal Society for the Protection of Birds, was born on the remote islands and has a comprehensive and extraordinary knowledge of the many birds which use the Shetlands as a sanctuary.
Australian marine naturalist, Neville Coleman, has set himself the awesome task of photographing the marine life of coastal Australia. Incredibly, he has already logged 6,000 species, and discovered 150 new forms of life in the process.
Densey Clyne, an Australian housewife turned nature photographer, has found an amazing variety of exotic beasts in her back garden in Sydney. She has made a particular study of the notoriously dangerous funnel-web spider.
Adrian Slack is a botanist obsessed by plants that eat flesh. At his Somerset home, he breeds carnivorous plants of all types. However, in this documentary, he visits their natural habitat - the Okefenokee Swamp, a wetland in Georgia, USA.
Tom Eisner is an insect expert who has made a detailed study of the war games that go on in the micro-universe beneath our feet, using special film techniques to show how insects have evolved intricate defence mechanisms.
Andrée Millar employs native tribesmen to collect unknown species of orchids for the Papua New Guinea Botanical Gardens, and Roy Mackay is attempting to preserve the island's rainforest, vital to the survival of numerous exotic species.
A British natural history woman in the grand tradition, Miriam Rothschild is world-famous for her scientific studies of fleas, and is also a powerful protector of threatened British wildflowers.
Harry Harju is a biologist in Wyoming, USA, one of the last wildlife wildernesses on Earth. But Wyoming has vast reserves of coal and uranium, and Dr. Harju has the responsibility of trying to keep the state as a wildlife preserve.
Leonard Williams lives with, and for, monkeys. He and his friends have spent years studying the behaviour of woolly monkeys at a special human/monkey community in Cornwall.
Lynn Rogers is a world expert on the North American black bear, concerned to protect its food supply. That's why we see him entering the cave of a sleeping adult to make a medical check on mother and cub.
This documentary features several naturalists who are concerned with the impact of man on wildlife. What do we do when good conservation creates a dangerous excess of animals, and are some animals being over-studied?
Gary Duke and Pat Redig, two animal doctors who have devoted their lives to keeping America's most exciting birds in the air, run the world's only hospital concerned solely with the healing and rehabilitation of eagles, hawks and owls.
Konrad Lorenz is one of the greatest nature-watchers in the world. Professor Lorenz has studied animals all his life and in 1973 he won a Nobel Prize for his work.
