The 9th is always "Enosui" Jelly fish day

Every month on the 9th, the Enoshima Aquarium in Fujisawa, affectionately known as Enosui, celebrates “Enosui Jellyfish Day.” The date comes from a simple wordplay: the “ku” in kurage (jellyfish) sounds like the number nine in Japanese. On this day, the aquarium hosts special programs that highlight the mysterious beauty of jellyfish, including hands‑on opportunities to join jellyfish surveys in Sagami Bay. 

Despite their delicate appearance, jellyfish are ancient creatures with a long evolutionary history, and their seasonal changes offer endless opportunities for discovery. Enosui is internationally recognized for its jellyfish exhibits, making it an ideal place for people of all ages to learn about marine life, biodiversity, and the fragile balance of ocean ecosystems.

Enosui Jellyfish Day encourages visitors to deepen their connection with the sea. Whether you’re exploring the aquarium’s glowing jellyfish displays, joining a research program, or sharing your favorite jellyfish photos online!

Have you ever been to "Enosui", Enoshima Aquarium? Did you visit the jellyfish display?