捕捉气泡也许不是舡鱼外壳的唯一功能，他认为。
Bubble trapping, however, may not be the only function of the shell-like case, he says.
雌舡鱼是与章鱼有表兄关系的4种物种之一，会生长出一种十分精致的白色外壳。
Female argonauts, a group of four species that are close Cousins of octopuses, grow delicate white shell-like cases.
人们一直在琢磨舡鱼敲打自己贝壳状外表的用意，亚里士多德曾经推测，其功能是否有点类似划船。
People have mused about the function of argonauts’ striking shell-like structures at least since Aristotle suggested that the animals sail or row them like boats.
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