PORT PHILLIP BAY


Bubble Shell 

Noalda exigua (Hedley, 1912)

View scientific description and taxonomy

Scientific Details

Cephalaspidea group detail.
Shell external, or reduced and internal. Other characters include: eversible penis in right side of head, operculum rarely present, gizzard plates often present. Most species have radula and gastral plates, some however have one or the other, some neither. Infaunal species are usually cream all over, epifaunal species strongly pigmented.

Source: Burn, R. (2006) A checklist and bibliography of the Opisthobranchia (Mollusca: Gastropoda) of Victoria and the Bass Strait area, south-eastern Australia. Museum Victoria Science Reports 10: 1-42.

Taxonomy

Phylum:
Mollusca
Subphylum:
Conchifera
Superclass:
Visceroconcha
Class:
Gastropoda
Subclass:
Orthogastropoda
Superorder:
Heterobranchia
Order:
Opisthobranchia
Suborder:
Cephalaspidea
Superfamily:
Philinoidea
Family:
Aglajidae
Genus:
Noalda
Species:
exigua

General Description

Body shape slug-like with shell. Gill structures internal. Pattern includes shades or colours of yellow and/or red. Animal up to 5 mm long.

Biology

This is one of few species with a partly exposed shell.

Habitat

Often found intertidally among seagrass, Amphibolis Antarctica, to depth of 37 m.

Coastal shores

Reefs

Seagrass meadows

Distribution guide

Southern Australia.

Species Group

Nudibranchs and allies Bubble shells

Depth

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

Water Column

On or near sea floor

Max Size

5 mm

Diet

Carnivore

Commercial Species

No

Global Dispersal

Native to Australia

Species Code

MoV 867

Identify

Conservation Status

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

Author

article author Burn, R.

Robert Burn is an Honorary Associate at Museum Victoria with expertise in Molluscs.

Author

article author Wilson, R.

Robin Wilson is a Senior Curator of marine invertebrates at Museum Victoria.

citation

Cite this page as:
Burn, R. & Wilson, R., 2011, Bubble Shell, Noalda exigua, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 24 Sep 2017, http://portphillipmarinelife.net.au:8098/species/4987

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