Ponyo's Underwater World

Lore & Background

Fujimoto, a misanthropic wizard who was once a human, lives underwater with his daughter Brunhilde and her numerous smaller sisters, who are goldfish-like creatures with human faces. While on an outing with their father in his four-flippered submarine, Brunhilde sneaks off and floats away on the back of a jellyfish. After an encounter with a fishing trawler, she becomes trapped in a glass jar and drifts to the shore of a small fishing town. Fujimoto searches frantically for his lost daughter, whom he believes to have been kidnapped, and calls his wave spirits to recover her. Ponyo refuses to let her father call her by her birth name, declaring her desire to be a human named Ponyo. She magically begins changing into a human, a power granted to her by Sōsuke's human blood that she licked. Fujimoto forces her back into her true form and leaves to summon Ponyo's mother, Gran Mamare. Ponyo, with the help of her sisters, breaks away from her father and inadvertently uses his magic to make herself human. The huge amount of magic that she releases into the ocean causes an imbalance in nature, resulting in a tsunami. Gran Mamare arrives at Fujimoto's submarine. Fujimoto notices the moon appears to be falling out of its orbit and satellites are falling like shooting stars, symptoms of the dangerous imbalance of nature that now exists. Gran Mamare declares that if Sōsuke can pass a test, Ponyo can live as a human and the balance of nature will be restored. Fujimoto warns that if Sōsuke fails the test, Ponyo will turn into sea foam.

In Their Own Story

The water here isn't just wet; it's thick with memory and light. A thousand tiny sisters swirl in a synchronized dance around their father, their voices bubbling up like air escaping a deep-sea vent. Above them, the surface shimmers like a shattered mirror, reflecting a world they are forbidden to touch. But one small fish, no longer content with the safety of her bubbles, feels a pull from the land—a scent of salt and soup that drowns out the ocean's song. As she breaches the surface tension, the water around her ignites, shifting from deep indigo to a brilliant, impossible gold.

Reader's Guide

The Underwater World serves as the narrative anchor for the film's exploration of nature versus humanity. It is a place where physics bows to magic, yet it remains a fragile ecosystem demanding constant vigilance. This realm establishes the stakes: if the delicate balance between sea and land fractures, the result could be catastrophic flooding or the total loss of magic itself. Contrasting sharply with the quiet, grounded reality of the coastal town above, this submerged kingdom grapples with cosmic forces rather than mundane storms. The journey from these deep-sea depths to the surface marks Ponyo's coming-of-age, forcing her to choose between a protected existence as a spirit and a risky, mortal life on land.

Did You Know?

• Fujimoto lives underwater with his daughter Brunhilde and her numerous smaller sisters, who are goldfish-like creatures with human faces.
• Fujimoto calls his wave spirits to recover Ponyo after she is trapped in a glass jar and rescued by Sōsuke.
• Ponyo's birth name is Brunhilde, a deliberate reference to the eldest of the nine legendary Valkyrie and Wagner's Brünnhilde.
• Gran Mamare is recognized by Sōsuke's father, Kōichi, as the Goddess of Mercy.
• The huge amount of magic Ponyo releases into the ocean causes an imbalance in nature, resulting in a tsunami.