Down she looked into the depth of the sea. While it was slightly disturbed on the surface by the passage of the Euphrosyne, beneath it was green and dim, and it grew dimmer and dimmer until the sand at the bottom was only a pale blur. One could scarcely see the black ribs of wrecked ships, or the spiral towers made by the burrowings of great eels, or the smooth green-sided monsters who came by flickering this way and that.