Vast expanse (3)
'vast expanse' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ocean that I've seen before include "Large stretch of water" , "Very large area of sea" , "Immense expanse or quantity" , "Pacific, for example" , "Large expanse of water" .)
'vast expanse' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sea that I've seen before include "Large expanse of water" , "Caspian, e.g." , "It's stocked with fish" , "eg Galilee" , "7 [ship] s on this" .)