From July 14 to September 14, 2026, the "Sumisui Fireworks 2026 ~Enjoy a Cool Summer with Water and Light.~" will take place at the Sumida Aquarium. During the day, goldfish will be displayed as if swimming on the ceiling, and at night, it transforms into a fantastic starry sky where fireworks featuring aquatic creatures will light up. Especially, watching fireworks alongside the Magellanic penguins is a unique summer experience.

Additionally, a corridor with 100 jellyfish wind chimes will appear on the indoor stairs, creating a fun photo spot. There will also be exhibitions showcasing goldfish culture from the Edo period and limited-time summer food menus. Come enjoy a cool summer moment with family and friends!