Comment: That's right along with a number of adaptations

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That's right along with a number of adaptations

Not only the diving reflex, that slows the heart and conserves blood oxygen, there are others too. A very weak thirst instinct, eye tears, sweat, dilute urine, flexible spine, body fat layers, body hair alignment, smooth skin, voluntary ability to hold breath etc. I know anthropologists reject the theory as it conflicts with the conventional savanna theory that they accept as fact.