![]() ![]() "Humans have particularly large sinuses, spaces in the skull between our cheeks, noses and foreheads," he added. Scientists have since added other human attributes of claimed aquatic origin – a recent addition being the sinus, said Rhys Evans, an expert on head and neck physiology at the Royal Marsden hospital, London. Then they lost their body hair and instead developed a thick layer of subcutaneous fat to keep warm in the water. To keep their heads above water, they evolved an upright stance, freeing their hands to make tools to crack open shellfish. The theory was first proposed in 1960 by British biologist Sir Alister Hardy, who believed apes descended from the trees to live, not on the savannah as is usually supposed, but in flooded creeks, river banks and sea shores, some of Earth's richest sources of food. ![]() The aquatic ape theory argues they all occurred because our ancestors decided to live in or near water for hundreds of thousands or possibly millions of years. Standard evolutionary models suggest these different features appeared at separate times and for different reasons. "We lack fur, walk upright, have big brains and subcutaneous fat and have a descended larynx, a feature common among aquatic animals but not apes." "Humans are very different from other apes," said Peter Rhys Evans, an organiser of Human Evolution: Past, Present and Future. ![]()
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