Angel or shark? (5)
I believe the answer is:
nurse
I believe this clue is a double definition.
'angel' is the first definition.
(I've seen this before)
'shark?' is the second definition.
(nurse shark is a kind of shark)
'or' acts as a link.
(Other definitions for nurse that I've seen before include "Look after the sick" , "Nanny" , "Patient tender" , "Trained carer" , "Nourish" .)