Silver Sea

The Silver Sea (originally, the Lily Lake) was a small freshwater sea (although possibly an enormous lake) that extended off of the Last Sea and was the closest body of water to Aslan's Country.

It was a great flowing sea of clear, sweet, saltless water naturally covered by myriad floating lillies. Caspian X discovered and named the sea during his voyage aboard the Dawn Treader during the Narnian Age of Exploration. Crewmember Reepicheep disappeared through the tower wave that was believed to lead into Aslan's Country. The sea also meets a grass plain at the end of which the sky touches the edge of the world.