The Sea of Olives is a massive forest of olive trees in Attolia. It was supposedly planted to honor one of the Eddisian gods, although it is unknown which one. It was abandoned when The Plague swept through the area, and large portions remain unharvested.
The Sea of Olives features remotely in the story of Klimun and Gerothenes, when Klimun is told by the moon goddess to plant the hills surrounding his city to olives. It is unknown if this is the origin of the Sea, or if Phresine took inspiration from it when telling the story.