Fish for the unaccompanied sailor (7)

I believe the answer is:

abalone

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(Other definitions for abalone that I've seen before include "shellfish for instance" , "Mollusc also called ormer" , "Edible marine mollusc -- Oban ale (anag)" , "sea mollusc" , "Seafood" .)

I've seen this clue in the Sydney Morning Herald.

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