When they drew nigh to the nearest island, the boat stopped ere they reached a landing-–place; and the saint ordered the brethren to get out into the sea, and make the vessel fast, stem and stern, until they came to some harbour; there was no grass on the island, very little wood, and no sand on the shore. While the brethren spent the night in prayer outside the vessel, the saint remained in it, for he knew well what manner of island was this; but he wished not to tell the brethren, lest they might be too much afraid. When morning dawned, he bade the priests to celebrate Mass, and after they had done so, and he himself had said Mass in the boat, the brethren took out some un–cooked meat and fish they had brought from the other island, and put a cauldron on a fire to cook them, After they had placed more fuel on the fire, and the cauldron began to boil, the island moved about like a wave; whereupon they all rushed towards the boat, and im–plored the protection of their father, who, taking each one by the hand, drew them all into the vessel; then relinquishing what they had removed to the island, they cast their boat loose, to sail away, when the island at once sunk into the ocean.
Afterwards they could see the fire they had kindled still burning more than two miles off, and then Brendan explained the occurrence: ‘Brethren, you wonder at what has happened to this island,’ ‘Yes, father,’ said they: ‘we wondered, and were seized with a great fear.’ ‘Fear not, my children,’ said the saint, ‘for God has last night revealed to me the mystery of all this; it was not an island you were upon, but a fish, the largest of all that swim in the ocean, which is ever trying to make its head and tail meet, but cannot succeed, because of its great length. Its name is Iasconius.’