简介：Rick Rosenthal goes on a quest that plumbs the secrets of the legendary bluefin tuna. This fish can weigh up to 1,500 pounds and can move up to 50 miles per hour. Here he catches a bluefin tuna on camera.
简介：Deep Ocean: Series 1 Once you pass 1,000 meters, the water is completely devoid of light, and you have reached the deep ocean. Down here, temperatures plummet to 39 degrees Fahrenheit, and constantly stay near freezing. The pressures at these depths range
简介：David Attenborough follows the remarkable story of the discovery of fossils in the Patagonia region of Argentina which prove to belong to the largest animal to ever walk the Earth.
简介：Conservationists Jim and Jean Thomas braved the steamy jungles of Papua New Guinea to save a tree kangaroo from extinction and ended up providing water and sanitation to ten thousand people in one of the most remote places on earth.