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To survive warming oceans, clownfish cope by shrinking in size. Scientists observed that some of the orange-striped fish shrank their bodies during a heat wave off the coast of Papa New Guinea. Fish ...

This photo provided by Morgan Bennett-Smith shows a clownfish near an anemone in Kimbe Bay, off the coast of Papa New Guinea.

As the marine world heats up, clownfish are showing an unsuspected talent for adapting to increasingly extreme conditions.