But in the long winter evenings he would sit by the peat-fire and watch the blue smoke curling up to the roof, and his eyes looked far and far away as if he was looking into another country. And sometimes, when the wind rustled the bent-grass on the machair, he seemed to hear a soft voice sighing his name.

One spring evening, the men of the clachan were bringing their boats full of herring into shore. They swung homeward with glad hearts, and their wives lit the rushlights, so that the wide world dwindled to a warm quiet room. Neil MacCodrum was the last to drag his boat up the shingle and hoist the creel of fish upon his back. He stood a while watching the seabirds fly low towards the headland, their wings dark against the evening sky, then turned to trudge up the shingle to the croft on the machair.

It was as he turned, he saw something move in the shadows of the rocks. A glimmer of white and then - he heard it between birds' cries - high laughter like silver. He set down the creel, and with careful steps he neared the rocks, hardly daring to breathe, and hid behind the largest one. And then he saw them - seven girls with long dark flowing hair, naked and white as the swans on the lake, dancing in a ring where the shoreline met the sea.

And now his eye caught something else - a shapeless pile of speckled brown skins lying heaped like seaweed on a boulder nearby. Now Neil knew that they were selkie, who are seals in the sea, but when they come to land, take off their skins and appear as human women.

Humped low so he would not be seen, Neil MacCodrum crept towards the pile of skins, and slowly slid the top one down. But scarcely had he rolled it up and put it under his coat, than one of the selkie gave a sharp cry. The dance stopped, the circle broke, and the girls ran to the boulder, slipped into their skins and slithered into the rising tide, shiny brown seals that glided away into the dark night sea.

All but one.

She stood before him as white as a pearl, as still as frost in starlight. She stared at him with great dark eyes, then slowly she held out her hand, and said in a voice that trembled with silver:

"Ochone, ochone! Please give me back my skin."

He took a step towards her and she stared at him with large brown eyes that held the depths of the sea. "Come with me," he said, "I will give you new clothes to wear."

The wedding of Neil MacCodrum and the selkie woman was set for the time of the waxing moon and the flowing tide. All the folk of the clachan came, six whole sheep were roasted and the whiskey ran like water. Toasts overflowed from every cup for the new bride and groom, who sat at the head of the table: MacCodrum, beaming and awkward, unused to pleasure, tapped his spoon to the music of fiddle and pipe, but the woman sat quietly beside him at the bride-seat, and seemed to be listening to another music that had in it the sound of the sea.

After a while she bore him two children, a boy and a girl, who had the sandy hair of their father, but the great dark eyes of their mother, and there were little webs between their fingers and toes. Each day, when Neil was out in his boat, she and her children would wander along the machair to gather wild parsnips and berries, or fill their creels with carrageen from the rocks at low tide. She seemed settled enough in the croft on the shore, and in May-time when the air was scented with thyme and roseroot and the children ran towards her, their arms full of wild yellow irises, she was almost happy. But when the west wind brought rain, and strong squalls of wind that whistled through the cracks in the croft walls, she grew restless and moved about the house as if swaying to unseen tides, and when she sat at the spinning-wheel, she would hum a strange song as the fine thread streamed through her fingers. MacCodrum hated these times and would sit in the dark peat-corner glowering at her over his pipe, but unable to say a word.

Thirteen summers had passed since the selkie woman came to live with MacCodrum, and her children were almost grown. As she knelt on the warm earth one afternoon, digging up silverweed roots to roast for supper, the voice of her daughter Morag rang clear and excited through the salt-pure air and soon the girl was beside her holding something in her hands.

"O mother! Is this not the strangest thing I have found in the old barley-kist, softer than the mist to my touch?"

Her mother rose slowly to her feet, and in silence ran her hand along the speckled brown skin. It was smooth like silk. She held it to her breast with one hand, and put her other arm around her daughter, and walked back with her to the croft in silence, heedless of the girl's puzzled stares. Once inside, she called her son Donald to her, and spoke gently to her children:

"I will soon be leaving you, mo chridhe, and you will not see me again in the shape I am in now. I go not because I do not love you, but because I must become myself again."

That night, as the moon sailed white as a pearl over the western sea, the selkie woman rose, leaving the warm bed and slumbering husband. She walked alone to the silent shore and took off her clothes, one by one, and let them fall to the sand. Then she stepped lightly over the rocks and unrolled the speckled brown parcel she carried with her, and held it up before her. For one moment maybe she hesitated, her head turning back to the dark, sleeping croft on the machair; the next, she wrapped the shining skin about her and dropped into the singing water of the sea.

For a while a sleek brown head could be seen in the dip and crest of the moon-dappled waves, pointing ever towards the far horizon, and then, swiftly leaping and diving towards her, came six other seals. They formed a circle around her and then all were lost to view in the soft indigo of the night.

In the croft on the machair, Neil MacCodrum stirred, and felt for his wife, but his hand encountered a cold and empty hollow. He knew better than to look for her and he also knew she would never come to him again. But when the moon was young and the tide waxing, his children would not sleep at night, but ran down to the sands on silent webbed feet. There, by the rocks on the shoreline, they waited until she came - a speckled brown seal with great dark eyes. Laughing and calling her name, they splashed into the foaming water and swam with her until the break of day.

For more stories by Mara Freeman, visit her site.