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PBS News Hour

In the increasingly damaged sea, one animal is thriving

Climate change, overfishing and pollution would naturally seem harmful for marine life. But one group of animals appears to be thriving: jellyfish. The blob-like creatures reproduce rapidly in higher temperatures and can prosper in waters tainted by human activity, such as the Gulf of Mexico’s oxygen-depleted “dead-zone.” Plus, declining fish populations mean reduced competition for food.

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