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Dolphins and orcas have passed the evolutionary point of no return to ever live on land again

www.livescience.com Dolphins and orcas have passed the evolutionary point of no return to live on land again

Scientists have discovered that once a mammal has become fully aquatic, it passes a threshold that makes a return to terrestrial landscapes almost impossible.

Dolphins and orcas have passed the evolutionary point of no return to live on land again
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