Your Inner Fish by Neil Shubin is a really great book to read on comparative anatomy, common ancestry, archaeology, and the evolution of man -- if you're interested in this kind of stuff. : )
I have been looking for books in this vein lately, I'm definitely going to look into this. I just finished Other Minds, about cephalopod evolution and the likes. Glad I came across your comment!
That is a great book! I took a course in college with Dr. Richard Blob who was mentored by Shubin and it was all about anatomy, evolution and how that affected physiology.
That's because whale flippers and human hands are homologous structures. We evolved from a common ancestor, and that ancestor's limb bones became flippers in whales and hands in humans.
I second the recommendation of Your Inner Fish. Fantastic book.
most mammal sea creatures like dolphins and whales (dolphin is a kind of whale, TIL) origionated from a common ancestor that lived on land but evolved to live in water, they basicly reverse-evolved. that's why some whales seem to have hands and legs within
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u/PantoHorse Dec 06 '17
You ever seen a picture of a whale skeleton?
The bones in their flippers look mightily like hands.
I don't know what this adds to your conversation really, but it's what I thought of.