''Ramisyllis'' is a small genus of

polychaete Polychaeta () is a paraphyletic class of generally marine Annelid, annelid worms, common name, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called c ...

annelid The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to vario ...

marine worms. Both species are characterised by their branching body plans. Both species are found in shallow water, with ''R. multicaudata'' native to

Darwin Harbour Darwin Harbour is a body of water close to the city of Darwin in the Northern Territory of Australia. It is the traditional waterways of the Larrakia people. It opens to the north at a line from Charles Point in the west to Lee Point in the ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

, and ''R. kingghidorahi'' native to the

Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it ...

near

Sado Island is an island located in the eastern part of the Sea of Japan, under the jurisdiction of Sado City, Niigata Prefecture, Japan, with a coastline of . In October 2017, Sado Island had a population of 55,212 people. Sado Island covers an area of ...

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

Species

* '' Ramisyllis multicaudata'' * '' Ramisyllis kingghidorahi''

References

Polychaete genera Bioluminescent annelids Syllidae {{Annelid-stub