The fourth sister was not so venturesome. She stayed far out among the rough waves, which she said was a marvelous place. You could see all around you for miles and miles, and the heavens up above you were like a vast dome of glass. She had seen ships, but they were so far away that they looked like sea gulls. Playful dolphins had turned somersaults, and monstrous whales had spouted water through their nostrils so that it looked as if hundreds of fountains were playing all around them.
Now the fifth sister had her turn. Her birthday came in the wintertime, so she saw things that none of the others had seen. The sea was a deep green color, and enormous icebergs drifted about. Each one glistened like a pearl, she said, but they were more lofty than any church steeple built by man. They assumed the most fantastic shapes, and sparkled like diamonds. She had seated herself on the largest one, and all the ships that came sailing by sped away as soon as the frightened sailors saw her there with her long hair blowing in the wind.
In the late evening clouds filled the sky. Thunder cracked and lightning darted across the heavens. Black waves lifted those great bergs of ice on high, where they flashed when the lightning struck.
On all the ships the sails were reefed and there was fear and trembling. But quietly she sat there, upon her drifting iceberg, and watched the blue forked lightning strike the sea.