Fruit found in island journey (5)
I believe the answer is:
mango
'fruit' is the definition.
(type of fruit)
'island journey' is the wordplay.
'island' becomes 'man' (the Isle of Man is an example).
'journey' becomes 'go' (I've seen this in other clues).
'man'+'go'='MANGO'
'found in' is the link.
(Other definitions for mango that I've seen before include "Fleshy tropical fruit" , "No, Mag has the odd fruit" , "fruit-tree" , "Once exotic fruit" , "Asian fruit" .)