Far out in the ocean the water is as blue as the petals of the loveliest cornflower, and as clear as the purest glass. But it is very deep too. It goes down deeper than any anchor rope will go, and many, many steeples would have to be stacked one on top of another to reach from the bottom to the surface of the sea. It is down there that the sea folk live.

The whole day long they used to play in the palace, down in the great halls where live flowers grew on the walls. Whenever the high amber windows were thrown open the fish would swim in, just as swallows dart into our rooms when we open the windows. But these fish, now, would swim right up to the little princesses to eat out of their hands and let themselves be petted.

Outside the palace was a big garden, with flaming red and deep-blue trees. Their fruit glittered like gold, and their blossoms flamed like fire on their constantly waving stalks. The soil was very fine sand indeed, but as blue as burning brimstone. A strange blue veil lay over everything down there. You would have thought yourself aloft in the air with only the blue sky above and beneath you, rather than down at the bottom of the sea. When there was a dead calm, you could just see the sun, like a scarlet flower with light streaming from its calyx.

Each little princess had her own small garden plot, where she could dig and plant whatever she liked.

Nothing gave the youngest princess such pleasure as to hear about the world of human beings up above them. Her old grandmother had to tell her all she knew about ships and cities, and of people and animals. What seemed nicest of all to her was that up on land the flowers were fragrant, for those at the bottom of the sea had no scent. And she thought it was nice that the woods were green, and that the fish you saw among their branches could sing so loud and sweet that it was delightful to hear them. Her grandmother had to call the little birds "fish," or the princess would not have known what she was talking about, for she had never seen a bird.

"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 things that they longed to know about.

The most eager of them all was the youngest, the very one who was so quiet and wistful. Many a night she stood by her open window and looked up through the dark blue water where the fish waved their fins and tails. She could just see the moon and stars. To be sure, their light was quite dim, but looked at through the water they seemed much bigger than they appear to us. Whenever a cloud-like shadow swept across them, she knew that it was either a whale swimming overhead, or a ship with many human beings aboard it. Little did they dream that a pretty young mermaid was down below, stretching her white arms up toward the keel of their ship.

The eldest princess had her fifteenth birthday, so now she received permission to rise up out of the water. When she got back she had a hundred things to tell her sisters about, but the most marvelous thing of all, she said, was to lie on a sand bar in the moonlight, when the sea was calm, and to gaze at the large city on the shore, where the lights twinkled like hundreds of stars; to listen to music; to hear the chatter and clamor of carriages and people; to see so many church towers and spires; and to hear the ringing bells. Because she could not enter the city, that was just what she most dearly longed to do.

Oh, how intently the youngest sister listened. After this, whenever she stood at her open window at night and looked up through the dark blue waters, she thought of that great city with all of its clatter and clamor, and even fancied that in these depths she could hear the church bells ring.

The heavens had a golden glow, and as for the clouds - she could not find words to describe their beauty. Splashed with red and tinted with violet, they sailed over her head. But much faster than the sailing clouds were wild swans in a flock. Like a long white veil trailing above the sea, they flew toward the setting sun. She too swam toward it, but down it went, and all the rose-colored glow faded from the sea and sky.

The following year, her third sister ascended, and as she was the boldest of them all she swam up a broad river that flowed into the ocean. She saw gloriously green, vine-colored hills. Palaces and manor houses could be glimpsed through the splendid woods. She heard all the birds sing, and the sun shone so brightly that often she had to dive under the water to cool her burning face. In a small cove she found a whole school of mortal children, paddling about in the water quite naked. She wanted to play with them, but they took fright and ran away.

Then along came a little black animal - it was a dog, but she had never seen a dog before. It barked at her so ferociously that she took fright herself, and fled to the open sea. But never could she forget the splendid woods, the green hills, and the nice children who could swim in the water although they didn't wear fish tails.

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.

Each of the sisters took delight in the lovely new sights when she first rose up to the surface of the sea. But when they became grown-up girls, who were allowed to go wherever they liked, they became indifferent to it. They would become homesick, and in a month they said that there was no place like the bottom of the sea, where they felt so completely at home.

On many an evening the older sisters would rise to the surface, arm in arm, all five in a row. They had beautiful voices, more charming than those of any mortal beings. When a storm was brewing, and they anticipated a shipwreck, they would swim before the ship and sing most seductively of how beautiful it was at the bottom of the ocean, trying to overcome the prejudice that the sailors had against coming down to them. But people could not understand their song, and mistook it for the voice of the storm. Nor was it for them to see the glories of the deep. When their ship went down they were drowned, and it was as dead men that they reached the sea king's palace.

On the evenings when the mermaids rose through the water like this, arm in arm, their youngest sister stayed behind all alone, looking after them and wanting to weep. But a mermaid has no tears, and therefore she suffers so much more.

"Oh, how I do wish I were fifteen!" she said. "I know I shall love that world up there and all the people who live in it."

And at last she too came to be fifteen.