Innovative Solution: Japan’s Aquarium Uses Cardboard Humans to Brighten Lonely Sunfish's Life

Facing challenges of loneliness due to renovation closures, the Kaikyokan aquarium in Japan creatively responded by introducing life-sized cardboard cutouts of humans, leading to the sunfish's improved health and spirits.

In an unexpected yet heartwarming solution to improve the conditions of a lonely sunfish, the Kaikyokan aquarium in Shimonoseki, Japan, has embraced innovation in animal welfare. Following the aquarium's closure for renovations that began in December, the sociable sunfish began to exhibit concerning behavior, refusing to eat jellyfish and rubbing against its tank.

Aquarium staff became alarmed at the sunfish’s distress and began to investigate possible causes—initially suspecting parasitic infections or digestive problems. However, one insightful team member speculated that the creature’s health issues might stem from a lack of human interaction, as the fish had grown accustomed to the presence of visitors.

To combat this loneliness, the staff set up a series of photographs depicting human faces, attached to rows of uniforms, designed to mimic the look of visitors. This unorthodox move proved successful; after just one day, the aquarium noted that the sunfish was "in good health again" and was seen happily "waving its fins" in response to its cardboard companions.

Mai Kato, a dedicated staff member, highlighted the sunfish’s curious personality, recalling how it would swim up to guests eagerly during open hours. Photos shared on the aquarium’s X (formerly Twitter) account showcased the sunfish swimming joyfully amidst its makeshift human friends, sparking widespread support on social media and encouraging previous visitors to plan future trips.

This inventive approach follows a broader trend in Japan, where aquariums have previously implemented creative methods to support animal welfare. During the global pandemic, one Tokyo aquarium organized video calls for eels, addressing similar feelings of isolation.

As the Kaikyokan aquarium prepares to reopen, it serves as a reminder of the importance of both physical and emotional care in sustaining the well-being of its animals.