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7 major threats to our planet's oceans

By: Catie Leary on Oct. 16, 2009, 11:22 p.m.
A pristine beach

Photo: lecates/Flickr

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World Oceans Day

This is an international observance held each year on June 8 aimed at celebrating the importance of our planet's largest bodies of water. After all, human existence is inexorably linked to the fate of the oceans, underscoring the need to take care of this fundamental resource.