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Birds Had Them First
● The snorkel and the periscope are by no means modern inventions by man. A bird, designed by the Creator, had them first. When the pied-billed grebe, a North American water bird, suspects that danger is lurking near, he will sink beneath the surface of the water, swim away to a safer area and then stick the tip of his beak out of the water, snorkel-fashion, for air. Eventually, when he decides to check if the danger is past, like a periscope he brings his head up just enough for an eye to survey the situation.
