A place that hasn't come to the fore as a seaside resort? (9)
I believe the answer is:
backwater
'a place that hasn't come to the fore as a seaside resort?' is the definition.
'backwater' can be an answer for 'a place' (I have seen 'Isolated place' mean 'backwater' so perhaps 'place' could also mean 'backwater'). I am not certain of the remainder of the definition.
'a place that hasn't' is the wordplay.
'a place' becomes 'back' (back is a kind of place).
'that hasn't' becomes 'water' (I can't justify this - if you can you should believe this answer much more).
'back'+'water'='BACKWATER'
Can you help me to learn more?
(Other definitions for backwater that I've seen before include "in the sticks" , "Isolated spot" , "Place where no development happens" , "Isolated place" , "Stagnant part of a river" .)