Prospect following land clearance (4,3)
I believe the answer is:
open sea
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for open sea that I've seen before include "Clear ocean" , "Unenclosed stretch of water" , "body of water away from land" , "Waves at large" , "Unenclosed ocean" .)