But the young Fisherman answered, ‘I will not let thee go save thou makest me a promise that whenever I call thee, thou wilt come and sing to me, for the fish delight to listen to the song of the Sea-folk, and so shall my nets be full.’ ‘Wilt thou in very truth let me go, if I promise thee this?’ cried the Mermaid. ‘In very truth I will let thee go,’ said the young Fisherman. So she made him the promise he desired, and sware it by the oath of the Sea-folk. And he loosened his arms from about her, and she sank down into the water, trembling with a strange fear. * * * * * Every evening the young Fisherman went out upon the sea, and called to the Mermaid, and she rose out of the water and sang to him. Round and round her swam the dolphins, and the wild gulls wheeled above her head. And she sang a marvellous song. For she sang of the Sea-folk who drive their flocks from cave to cave, and carry the little calves on their shoulders; of the Tritons who have long green beards, and hairy breasts, and blow through twisted conchs when the King passes by; of the palace of the King which is all of amber, with a roof of clear emerald, and a pavement of bright pearl; and of the gardens of the sea where the great filigrane fans of coral wave all day long, and the fish dart about like silver birds, and the anemones cling to the rocks, and the pinks bourgeon in the ribbed yellow sand. She sang of the big whales that come down from the north seas and have sharp icicles hanging to their fins; of the Sirens who tell of such wonderful things that the merchants have to stop their ears with wax lest they should hear them, and leap into the water and be drowned; of the sunken galleys with their tall masts, and the frozen sailors clinging to the rigging, and the mackerel swimming in and out of the open portholes; of the little barnacles who are great travellers, and cling to the keels of the ships and go round and round the world; and of the cuttlefish who live in the sides of the cliffs and stretch out their long black arms, and can make night come when they will it. She sang of the nautilus who has a boat of her own that is carved out of an opal and steered with a silken sail; of the happy Mermen who play upon harps and can charm the great Kraken to sleep; of the little children who catch hold of the slippery porpoises and ride laughing upon their backs; of the Mermaids who lie in the white foam and hold out their arms to the mariners; and of the sea-lions with their curved tusks, and the sea-horses with their floating manes. And as she sang, all the tunny-fish came in from the deep to listen to her, and the young Fisherman threw his nets round them and caught them, and others he took with a spear. And when his boat was well-laden, the Mermaid would sink down into the sea, smiling at him.