Documentary series looking at the most dramatic wildlife spectacles on our planet, showing how life responds to natural events which can dramatically transform entire landscapes.
The peaks and the valleys. Find the essential episodes — and the ones to skip.
The annual return from the Pacific Ocean of millions of salmon to the streams where they were born in North America in order to spawn and die. Grizzly bears depend for their survival on this event, too.
The sardine run, which takes place each winter along the South African coast. Dolphins first find the sardines and gannets, seals, sharks and whales follow for the biggest fish supper on the planet.
As winter finally passes and the sun climbs over the Arctic, the 4,000,000 square mile ice-sheet rapidly begins to melt, revealing an archipelago of islands, channels and seas. For the masters of the ice, the polar bears, this is a moment of jeopardy but for others like the arctic fox, beluga whales, thousands of lemmings and immense flocks of birds this is the richest place on Earth.
After a seemingly endless icy winter, the Arctic coast of Alaska and British Columbia, and the the northern Pacific which washes it, warm and bloom more intensely then the Amazon forest. plankton, which gets constant feeding in the deep fjords is a feast for the food chain. This starts with herring, seals and whales, which travel for months from the quiet, warm but relatively poor Hawaiian waters. Many species time births to benefit from the short, abundant feeding spray. Many build up fat reserves for the colder rest of the year.
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
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