Male marine predator circling popular Mediterranean island (7)
I believe the answer is:
minorca
'mediterranean island' is the definition.
(I've seen this in another clue)
'male marine predator circling popular' is the wordplay.
'male' becomes 'm' (common abbreviation).
'marine predator' becomes 'orca' (I've seen this in another clue).
'circling' is an insertion indicator (circling can mean going around or containing).
'popular' becomes 'in' ('in' can mean trendy).
'm'+'orca'='morca'
'morca' going around 'in' is 'MINORCA'.
(Other definitions for minorca that I've seen before include "Land in Balearics" , "Mediterranean island" , "Balearic island (Eng. sp.)" , "One of Balearic islands" , "holiday island" .)