In Friedrich de la Motte Fouqué’s Undine, as excerpted in The Penguin Book of Mermaids (pp. 101–106), the fragile connection between humanity and nature dissolves through the figure of Undine, a water-spirit who enters the human world through marriage. The story captures the moment of her transformation — from elemental being to domesticated wife — as both tender and tragic. Fouqué’s rich imagery portrays not only a personal metamorphosis but a larger allegory of humankind’s estrangement from the natural world. Through Undine’s emotional shift, the subdued language of the waters, and Huldbrand’s fearful withdrawal, the story dramatizes how the human desire for control and stability severs our relationship with nature — a separation that resonates even more deeply in the modern era.

The story’s central image of loss occurs in the quiet aftermath of Undine’s wedding, when she realizes she no longer belongs to her father’s watery kingdom: “In endearing confidence, Undine walked back to the cottage, leaning on his arm; feeling now for the first time with all her heart, how little she ought to regret the forsaken crystal palaces of her mysterious father” (106). Here, Undine’s departure from the “crystal palaces”, bright, pure, and fluid, marks her surrender of the natural realm. The “mysterious father” evokes the elemental forces of the earth, incomprehensible to human reason. By contrast, the “cottage” stands for the domestic, bounded human sphere. Her newfound “endearing confidence” and the gesture of “leaning on his arm” symbolize her complete emotional investment in human life. The phrase “how little she ought to regret” captures an inner repression: she convinces herself that the loss of her origins is insignificant. Fouqué’s diction thus mirrors the human condition, our willingness to trade nature’s mystery for the safety and order of civilization.

This symbolic separation extends beyond Undine’s emotions to the environment itself. Shortly after her union with Huldbrand, Undine tells him “If you mean to reject me, do so now, and return alone to the shore. I will dive into this brook…” (105).  As Undine speaks to Huldbrand in this manner, she continues to tell her new partner she will be able to still thrive in her home environment if he is not willing to treat her properly. Knowing this, Huldbrand decides to embrace her “with the most heartfelt emotion and love”, taking her back to shore and away from the water. With this, the beginning of the end was signified as an irreparable separation was then created between Undine and the ocean. 

With this, the story transcends the romantic fairy-tale frame to offer an ecological allegory. Undine’s peaceful acceptance of her separation, her belief that she “ought to regret” little, mirrors the complacency of modern humanity, which often forgets what it has left behind. The“crystal palaces” may once have symbolized beauty and belonging, but in the human world they become unreachable myths, like the lost wildernesses of our own age. 

In The Day After the Wedding, the union of Undine and Huldbrand becomes a parable of disconnection: love binds them even as it exiles her from her origin. The story’s quiet domestic peace conceals an irreversible loss, the loss of communion with the living world. Two centuries later, Fouqué’s mermaid remains an emblem of humanity itself: longing for connection, yet estranged from the waters that once gave it life.