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It’s official: Dolphins and orcas have crossed evolution’s point of no return to live on land again

A dolphin breaking the surface for air can seem like a reminder of its mammalian past. But evolution is not nostalgia. The ...
CNN

Some dolphins appear to have orca friends. Scientists think they have figured out what’s going on

A pod of Pacific white-sided dolphins off the coast of British Columbia have been observed cooperating with orcas, a traditional enemy that’s better known for taking out great white sharks than ...