Expanse with "sunlight" and "twilight" zones (5)
I believe the answer is:
ocean
(Other definitions for ocean that I've seen before include "Indian perhaps" , "Very large area of sea" , "Main" , "Large stretch of sea" , "Huge body of water" .)
I believe the answer is:
ocean
(Other definitions for ocean that I've seen before include "Indian perhaps" , "Very large area of sea" , "Main" , "Large stretch of sea" , "Huge body of water" .)