Lake Tanganyika is an 'Ocean' in Africa. Millions of years ago it was colonized by a little fish called 'Cichlid'. Otters, crocodiles, cobras and cormorants all hunt the fish in clear water. How the Cichlid survived and evolved is an incredible story for, millions of years later, there are over 200 new species - all found only in Lake Tanganyika. Incredibly, they have evolved to look like coral reef fish. There are cichlid equivalents of tuna, snapper, gobies and goatfish. They have evolved bizarre methods of breeding with mouth-incubation, lekking and, unique amongst fish, there is even a cuckoo. Despite all their specialization over millions of years, if an opportunity presents itself, the little fish can behave like their unspecialized ancestor. In the climax of the film, they bang together to feast on a hatch of sardine fry. This is the story of how one little fish has conquered a lake.

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The Southern Sea Otter was historically abundant along the California coastline until intense huntin...

Sea otters are once again in peril after being brought back from the brink of extinction. An unprece...

Follows the story of "Grizzly Man" Timothy Treadwell and what the thirteen summers in a National Par...
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Filmed on location in Montana and Washington State, this 1976 biography of poet and teacher Richard ...

Drawing from never-before-seen footage that has been tucked away in the National Geographic archives...

Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron...

Investigation into a global ecological disaster that could endanger the entire human race. Today, a ...

Documentary about chimps in Gombe.

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Coral Reef Adventure follows the real-life expedition of ocean explorers and underwater filmmakers H...

The story of the evolution of tropical rain forests, their recent and rapid destruction, and the int...

Carefully picked scenes of nature and civilization are viewed at high speed using time-lapse cinemat...

Documentary originally produced for BBC's television series "Natural World".