Supernatural Quotes in A Wizard of Earthsea

How we cite our quotes: (Chapter.Paragraph)

Quote #10

The sea had turned to sand, shadowy, unstirred. Nothing moved in the dark sky or on that dry unreal ground that went on and on into gathering darkness all around the boat as far as eye could see. (10.58)

In A Wizard of Earthsea, we see supernatural monsters and spells and people crossing over into the land of the dead. But here we also see the ocean turning into land. Does it get any more supernatural than ocean becoming land? (We might also make a connection between this scene and the Creation of Ea, the song that tells how Segoy made the islands rise out of the ocean.)