Whales Kept Their Hip Bones For Better Sex

September 9, 2014 6:43 PM

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Experts have long thought that the pelvic bone that floats unattached to the rest of a whale's skeleton is simply an evolutionary throwback from when their ancestors boasted four flippers. Now, researchers argue that whales actually are using this seemingly useless bone for very specific mating purposes.

Shin bone connected to the knee bone. Knee bone connected to the thigh bone. Thigh bone connected to the ... hip bone?

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