Recover on island seafood tours (7)
I believe the answer is:
reclaim
'recover' is the definition.
(synonyms)
'on island seafood tours' is the wordplay.
'on' becomes 're' ('on' can be mean 'with reference to').
'island' becomes 'i' (geographical abbreviation).
'seafood' becomes 'clam' (clam is a kind of seafood).
'tours' means one lot of letters goes inside another (to tour can mean to go around).
'i' put within 'clam' is 'claim'.
're'+'claim'='RECLAIM'
(Other definitions for reclaim that I've seen before include "Salvage" , "Miracle (anag)" , "Make (land) available for use" , "Win back" , "Recover (materials/land) for subsequent use" .)