This story is dripping with sea imagery. How could it not be when it all takes place in and around the sea? All the locations we go to are either in the water, under the water, or near the water. You've got beautiful beaches, mysterious islands, and the vast ocean deep. All the characters are associated with the sea as well. Glaucus is a sea god, Circe is a sea witch, and Scylla is a sea nymph who turns into a sea monster. Everything in this tale is sopping wet and covered in seaweed. Overall, it seems like all this sea imagery adds to the magical, mystical feeling of the story.