it's called "The Ballad of the White Seal Maid", and it's on her CD There's A Light... check out luicollins.com for more...
THE BALLAD OF THE WHITE SEAL MAID
There's a fisherman sitting alone on the land
His hands are his craft His boat is his art
A fisherman sitting alone on the land
A rock A hard rock in his heart
There's a selkie maid swimming alone in the bay
Her eyes are the seals Her heart is the sea
A selkie maid swimming alone in the bay
A pure white seal maiden is she
She comes to the shore and she sheds her sealskin
She dances on the sand Dances under the moon
Her hair falls in waves down upon her white skin
And only the sea hears the tune
Then standing the fisherman takes her sealskin
Staking his claim to a wife from the sea
He raises his hand holding up the white skin
Says, "Now you must come home with me"
Oh weeping she goes and still weeping she stays
Her hands are her craft Her babes are her art
A year and a year and a year more she stays
A rock A cold rock in her heart
But what is this hid in the fisherman's bag
It smells of the ocean It feels like the sea
A bonny white sealskin closed up in the bag
And never a tear more cries she
Good-bye to the house and good-bye to the shore
Good-bye to the babes that I never could claim
But never a thought to the man left on shore
For selkie's my nature and name
She puts on her skin and dives back in the sea
The fisherman's cries fall on water-deaf ears
She swims in her sealskin away out to sea
And the fisherman drowns in his tears