Tender shark (5)
I believe the answer is:
nurse
I believe this clue is a double definition.
'tender' is the first definition.
(someone who tends to patients)
'shark' is the second definition.
(nurse shark is a type of shark)
(Other definitions for nurse that I've seen before include "Suckle" , "Hospital carer" , "care worker" , "Entangle" , "Carry on - - (film)" .)