An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
EXTENDED | In gastropods, the state of the animal being exposed out of its shell; also the condition of its TENTACLES being out and functioning or (in NUDIBRANCHSs) a branchial BRANCHIAL PLUME being exposed. In bivalves, the condition of the clam having its FOOT and/or SIPHONS exposed during digging or feeding, respectively. See also: RETRACTED. | |
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