As evolutionary biologist Neil Shubin points out, "In one sense, evolution didn't invent anything new with whales. It was just tinkering with land mammals. It's using the old to make the new." ...

This is evidence that quite separate, independent episodes of molecular evolution occurred, with the same functional results. This is a dramatic example of convergent evolution, when organisms ...

While whale song does not carry semantic meaning ... looking at our closest primate relatives but also at cases of convergent ...