''Halgerda graphica'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary t ...

, a dorid nudibranch, shell-less

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family Discodorididae.

Distribution

This species was described from Kangaroo Island,

South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...

. It has also been reported from nearby Port Moorowie on the Yorke Peninsula and

Burrewarra Point Burrewarra Point is to the north of Broulee and 25 kilometres south of Batemans Bay on the south coast of New South Wales, Australia. An active lighthouse, Burrewarra Point Light, is located at Burrewarra Point. It was built in 1974. Al ...

, near

Batemans Bay Batemans Bay is a town on the South Coast region of the state of New South Wales, Australia. Batemans Bay is administered by the Eurobodalla Shire council. The town is situated on the shores of an estuary formed where the Clyde River meets the ...

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

.Rudman, W.B., 1999 (October 27) ''Halgerda graphica'' Basedow & Hedley, 1905. [In
/nowiki> Sea Slug Forum. Australian Museum, Sydney.">n">Rudman, W.B., 1999 (October 27) ''Halgerda graphica'' Basedow & Hedley, 1905. [In
/nowiki> Sea Slug Forum. Australian Museum, Sydney./ref>

References

Discodorididae Gastropods described in 1905 {{Discodorididae-stub