Last Updated
：2025/11/27
spirula
（ plural ）
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Any mollusk of the cephalopod genus Spirula, of which Spirula spirula is the only extant species.
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spirula
During the marine biology trip, the students carefully observed a spirula that had washed ashore, marveling at its coiled internal shell.
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During the marine biology trip, the students carefully observed a spirula that had washed ashore, marveling at its coiled internal shell.
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