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I'm not up on seal anatomy; but I think the main thing to evolve is some sort of grip on, for example, a stick or spear. That does NOT require an opposable thumb. Our opposable thumb gives our gri...
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I'm not up on seal anatomy; but I think the main thing to evolve is some sort of grip on, for example, a stick or spear. That does NOT require an opposable thumb. Our opposable thumb gives our gri...