Neptune's domain (3,3)
'neptune's domain' is the definition.
(I've seen this in another clue)
This is all the clue.
'neptune's domain' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sea that I've seen before include "The Med, e.g." , "& 14 Ozone" , "Watery expanse" , "host of 1d [ADVENTURE]" , "Large expanse of water" .)