Wildlife loss in the global ocean

Over the past 500 years, approximately 500 land-based animal species have gone the way of the dodo, becoming extinct as a result of human activity. In the ocean, where scientists count only 15 or so such losses, the current numbers aren’t nearly as dire. But that doesn’t mean they aren’t yet heading in that direction. A consortium of scientists has found that the same patterns that led to the collapse of wildlife populations on land are now occurring in the sea. According to the researchers, wildlife populations in the oceans are as healthy as those on land were hundreds or thousands of years ago. However, they warn, that may be about to change as the next 100 years promise to present major challenges to marine life.

Provided by the University of California, Santa Barbara

Runtime: 4:51

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