Sorry to be vague.(mislaid puzzle)
The answer had to be "MUSCLE" ref to seafood ok. Can't figure first part. Can anyone help. Sorry about vagueness.
Gathered on line as shellfish might (6) MUSCLE
Def. is "might", and it sounds ("Gathered on line", i.e. on the phone) like MUSSEL ("as shellfish").
Now I have a distinct feeling of deja vu