Doctor I caught beside the sea (5)
I believe the answer is:
Here is my best explanation:
'doctor' is the definition.
'i caught beside the sea' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'beside' means one lot of letters go next to another (I've seen this in other clues).
'the sea' becomes 'med' (abbreviation of Mediterranean).
'ic' put after 'med' is 'MEDIC'.
(Other definitions for medic that I've seen before include "A word for 'doctor'", "Physician (informal)", "He may offer treatment", "What was Basutoland", "Eg, doctor", "Doctor", "Word for 'doctor'" and "Health worker".)