Caught four at sea making for an Ionian island (5)
I believe the answer is:
corfu
'for an ionian island' is the definition.
(I've seen this before)
'caught four at sea' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'at sea' indicates anagramming the letters.
'four' is an anagram of 'orfu'.
'c'+'orfu'='CORFU'
'making' is the link.
(Other definitions for corfu that I've seen before include "Major holiday island off west coast of Greece" , "One of the Ionian islands" , "Largest of the Ionian Islands" , "Greek holiday island" , "part of Greece" .)