There's a nice little video just been published by Richard Dawkins about Whale evolution: - http://richarddawkins.net/article,4058,RDF-TV---Show-me-the-intermediate-fossils,Richar... - I was a bit puzzled by DT's comment in the "Why is ..." thread where he says: "there is still no evidence for macroevolution, only microevolution". Isn't the above an example of macroevolution? Or do you mean something else by the term?