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National Geographic : 1973 Aug
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JELLYFISH,CYANEACAPILLATA(ABOVEAND RIGHT), 10 INCHES; AMPHIPODS,HYPERIAMEDUSARUM(RIGHT), 8/10 OF AN INCH Skirts billowing, a lion's mane jellyfish drifts be neath the ice vault (above), trailing a skein of stinging tentacles. Photographer Curtsinger, a Navy-trained veteran of several polar diving ex peditions, found a profusion of the lacy inverte brates in the bay. As if riding a sun-tinted cloud, amphipods sprawl on the soft umbrella of the jellyfish (right). The crustaceans, which flourish in Arctic waters, may use the jellyfish as a mobile restaurant, sneak ing scraps from food it catches or, at times, turn ing hungrily on their host itself. As lights penetrated the dark world around Sub Igloo, biologists found an amazing concentration of life, fostered by the abundant nutrients and oxygen characteristic of this icy water. 254 National Geographic,August 1973
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