World Jellyfish Day 2024 Poster. A glimpse of jellyfish diversity to celebrate world jellyfish day including 38 species from the north sea, norwegian sea, arctic ocean and southern ocean. On november 3, world jellyfish day celebrates this invertebrate that has been on earth for millions of years.

World jellyfish day is a holiday observed annually on the 3rd of november to celebrate certain gelatinous members of the subphylum medusozoa. World jellyfish day is on 3 november.