amnhnyc:Did you know? Whales’ flippers, or pectoral fins, share bone structure with the huma
amnhnyc: Did you know? Whales’ flippers, or pectoral fins, share bone structure with the human arm and hand. In fact, the bones of cetacean flippers are the same kinds of bones as in the human arm, with an upper arm bone, two forearm bones, and hand, wrist, and finger bones. In whales, fingers are elongated and may have additional bones.Read more on whales’ amazing adaptations here. -- source link
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