When you get to be fifteen," her grandmother said, "you will be allowed to rise up out of the ocean and sit on the rocks in the moonlight, to watch the great ships sailing by. You will see woods and towns, too."
Next year one of her sisters would be fifteen, but the others - well, since each was a whole year older than the next the youngest still had five long years to wait until she could rise up from the water and see what our world was like. But each sister promised to tell the others about all that she saw, and what she found most marvelous on her first day. Their grandmother had not told them half enough, and there were so many thing that they longed to know about.