In any forest, there's a complex interdependent web of life underground.

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A mushroom is the visible part of a much larger organism.

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Bears at Alaska's McNeil River have come to rely on an annual fish feast.

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Over a hundred brown bears in Alaska have learned that every July, the McNeil River is THE place to catch fish. 

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This summer, an endangered seabird will find one of its last remaining safe havens on the salt marshes off the coast of New Jersey.

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