Sergey Kuznetsov, a former navigator of the space ship Atlant, by a random shift in space and time, ends up in a world completely devoid of land—an endless ocean. He’ll have a hard time among the sirens—almost three-meter-tall women living in underwater cities. Because there are no men in this world at all! Besides, from his previous meeting with Elora, his wife, Sergey knows she has already been to this world, and that they will meet again—yet he will die here, since she saw his remains. So Sergey prepares himself—for life among sirens, for the upcoming meeting with his wife, and for his own future death. Second edition, November–December 2021. The work has grown significantly. Contains profanity.