http://worldcat.org/entity/work/id/369702966

Nature's most amazing events

Each season, as the ever-thinning arctic ice recedes polar bears face a daunting challenge; Grizzly bears in British Columbis must use ingenuity and fancy footwork to collect their catch ; The annual rains of the Serengeti draw in the greatest concentration of large animals on Earth; Each year, billions of sardines flood South Africa's eash coast creating an action-packed feeding frenzy; Thousands of animals make the long trek toward the life saving annual flood of Botswana's Okavango Delta; The annual plankton boom of Alaska's coastal waters attracts humpback whales and sea lions, who must avoid predatory killer whales.

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