Carybdea rastoni
Jimble, Carybdea rastoni Image: Dr Isobel Bennett
Australian Museum

Fast Facts

  • Classification
    Species
    rastoni
    Genus
    Carybdea
    Family
    Carybdeidae
    Order
    Cubomedusae
    Class
    Cubozoa
    Phylum
    Cnidaria
    Kingdom
    Animalia
  • Size Range
    3.5 cm

Introduction

The Jimble belongs to the Cubozoan order of jellyfish.

Identification

The Jimble, like all cubozoans, has a box-shaped bell with tentacles at each corner.

Habitat

Jimbles live in coastal waters, estuaries and oceans. The Jimble is the only cubozoan that occurs in the colder southern Australian waters. Occasionally it can be present in high densities in Sydney Harbour.

Distribution

The Jimble is found from Western Australia to Southern Queensland.

Danger to humans

Cubozoans are generally strong swimmers and have painful stings. Some tropical cubozoans are among the deadliest of all venomous marine animals, including the Box Jellyfish (Chironex fleckeri).

The Jimble, however, is not dangerous. It does sting but the venom potency is nowhere near as potent as its tropical relatives. The Jimble can still deliver a painful sting. If stung, wash the area with vinegar and apply a cold pack to relieve the pain. Seek medical attention if necessary.