Aquatic Ape Hypothesis - Did we come from the Dolphins?

This Is a proposal that the evolutionary ancestors of modern humans spent a period of time adapting to a semiaquatic existence. The hypothesis was first proposed by German pathologist Max Westenhöfer in 1942, and then independently by English marine biologist Alister Hardy in 1960. After Hardy, the most prominent proponent was Welsh writer Elaine Morgan, who wrote a series of books on the topic.