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A geographer who noted "It is a curious fact that no other primates appear to have taken to living on seashores, though certain Asiatic macaques do come to them for crabs and other shellfish, and are able to swim. Most primates seem to forage in water, and some do not swim at all"
Sauer thought that the possibility that modern man"s physiological need for iodine and salts, his "inclination" to high protein intake and his greater tolerance for unsaturated fats than for saturated may trace back to his origins as a seaside resident.
It"s possible that in the late Ice Age 10,000-12,000 years ago, encroaching glaciers may have forced men either to find sustenance at the edge of the sea or to perish; and that it was along the seacoasts that the races of men fanned out to populate the earth.