Neptune's realm (5)
'neptune's realm' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ocean that I've seen before include "An immense expanse of sea" , "Large area of water" , "Large body of salt water" , "Pacific, perhaps" , "Immense expanse or quantity" .)
'neptune's realm' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sea that I've seen before include "North for one" , "Adriatic, for example" , "The Med, e.g." , "The main" , "host of 1d [ADVENTURE]" .)