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shell sac

noun

shell sac

noun
1

Biology, Natural sciences, Zoology The sac in which the shell of a mollusc is secreted during development; (now especially) the fold of mantle in which a cephalopod secretes its pen or gladius.

  • Baby cephalopods, even octopuses, all have a shell sac, which is comparable to the mantle folds that baby clams and snails use to make their shells.2017, Danna Staaf, Squid Empire, ForeEdge, →ISBN, page 115:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.