Edible mollusc men found by sea abroad (5)

I believe the answer is:

ormer

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'edible mollusc' is the definition.
'ormer' can be an answer for 'mollusc' (ormer is a kind of mollusc). I'm not sure about the 'edible' bit.

'men found by sea abroad' is the wordplay.
'men' becomes 'OR' (military abbreviation for other ranks).
'found by' says to put letters next to each other.
'sea abroad' becomes 'mer' ('sea' in French).
'or'+'mer'='ORMER'

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(Other definitions for ormer that I've seen before include "Delicacy from Channel Islands" , "Sea-ear, an abalone found near the Channel Is" , "Shellfish" , "Ear-shaped shell" , "Ear-shell" .)

I've seen this clue in The Guardian.

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