Irukandji resemble floating jellyfish and can be found roaming the surface of the the Jade Sea in groups with Creeping Carp and Scuttle Fish. There are some giant specimens frozen in jade around the Jade Sea.
- You can find a giant Irukandji creature incased in jade in Gyala Hatchery (explorable) in a small place on the map with water. Map
- The name of this monster is inspired by the Irukandji jellyfish found in Australian waters.
- Miniature Irukandji is a white rarity mini that can be obtained from the third annual series of Birthday Presents.