PORT PHILLIP BAY


Haekel's Jellyfish 

Pseudorhiza haeckeli Haacke, 1884

View scientific description and taxonomy

Scientific Details

Body (bell) rounded and exterior surface covered in numerous raised lumps (bearing nematocysts). Bell transparent with brownish coarse reticular (honeycomb) pattern. Cross structure inside body, visible through bell. Curved nematocyst bearing oral alms around the bottom of the bell, with delicate branching. One oral arm bears a long paddle-shaped appendage (often pink-purple). This may be in various stages of regeneration. No tentacles. Sixteen radial canals, 8 reaching bell margin, other 8 only to ring canal. Bell up to 40 cm across. It is not uncommon to see deteriorating specimens of which only the bell and stumps of oral arms may remain.

Taxonomy

Phylum:
Cnidaria
Class:
Scyphozoa
Order:
Rhizostomeae
Family:
Lychnorhizidae
Genus:
Pseudorhiza
Species:
haeckeli

General Description

Body (bell) rounded and covered in numerous raised, warty lumps. Cross structure inside body, visible through transparent bell. Curved arms around the bottom of the bell, one with a long colourful tail. No tentacles. Bell and arms reasonably transparent. Tail may be in various stages of regeneration. Bell up to 40 cm across.

Biology

The tail of Haeckel's Jellyfish can be damaged during prey capture and attack from other animals, so its length varies depending on the stage of regeneration. The warty lumps on the bell and the curved arms contain stinging cells. In Port Phillip they may have amphipods or parasitic anemones living upon them.

Habitat

Open water, may drift near shore, to depth of 30 m.

Open water

Distribution guide

Most states of Australia.

Species Group

Jellyfishes and allies Jellyfishes

Depth

Shore (0-1 m)
Shallow (1-30 m)

Water Column

Surface Midwater

Max Size

40 cm

Diet

Carnivore

Harmful

Minor sting possible.

Commercial Species

No

Global Dispersal

Recorded in Australia

Identify

Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed

Author

article author Browne, J.

Jo Browne is a consultant with expertise in ctenophore and cnidarian taxonomy.

citation

Cite this page as:
Browne, J., 2011, Haekel's Jellyfish, Pseudorhiza haeckeli, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 21 Jul 2017, http://portphillipmarinelife.net.au:8098/species/7762

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