How do you say hydrosphere in Greek?
— Υδρόσφαιρα

Terms within for hydrosphere in Greek
oceanωκεανός (m) (okeanós)
seaθάλασσα (f) (thálassa); πέλαγος (n) (pélagos)
Group relationships for hydrosphere in Greek
earthγη (f) (gí)
worldκόσμος (m) (kósmos)