Aptly called a seaangel, this translucent creature is a snail whose foot has been modified into a pair of swimming wings.
人们形象地称这种透明生物为海天使。它是一种蜗牛，脚部已经进化成为一对游泳用的翅膀。
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A 2005 Census of Marine Life expedition to the Arctic Ocean captured a so-called seaangel, Clione limacina, at about 1, 148 feet (350 meters) underwater.