Bay, inlet (4)
I believe the answer is:
cove
I believe this clue is a double definition.
'bay' is the first definition.
(I've seen this before)
'inlet' is the second definition.
(I know that cove is a type of inlet)
(Other definitions for cove that I've seen before include "where the sea comes in" , "sheltered recess at Lulworth?" , "Small bay - fellow" , "Sheltered accommodation" , "Small bay or slangy man" .)