Hollow offers presented by estate agent, depress writer located off shore (4,3)
I believe the answer is:
open sea
'hollow offers presented by estate agent depress' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'writer located off shore' is the wordplay.
I cannot quite see how this works, but
'writer' could be 'pen' (something which writes) and 'pen' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for open sea that I've seen before include "body of water away from land" , "Unenclosed stretch of water" , "The main" , "Clear ocean" , "Unenclosed ocean" .)