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Stylasterid corals, common name “lace corals”, are calcified, often colourful, colonial hydrozoans of the phylum Cnidaria. Their aragonite/calcite skeleton (Cairns & Macintyre 1992), gross branching morphology, relatively large size, and their association with commensal invertebrates (e.g. polychaetes and asteroids) make them an important component of the deep sea fauna in most oceans (Cairns 2011). There are 27 described stylasterid genera, with 247 species world-wide (Cairns 2011). Fourteen genera and thirty three species are recorded from the Antarctic region, south of the Antarctic Front at 54°S (Cairns 1983, Cairns 1991) (Table 1, Map 1). There are no described stylasterids from within the Arctic Circle (Cairns 2011), and Southern Ocean diversity is comparatively higher than other oceans (e.g., only one species, Errina aspera, has been described from the Mediterranean). Stylasterids have been observed in Southern Ocean collections since the early 1800s (Stokes 1847) and the last biogeographic summary was published in 1983 (Cairns 1983). However, it is only in the past decade that modern remote video and sampling techniques have allowed us to glimpse images of them in their natural habitat. The Census of Antarctic Marine Life (CAML), in collaboration with the Scientific Committee on Antarctic Research Marine Biodiversity Information Network (SCAR-MarBIN) conducted between 2005 and 2010, has provided new data on Antarctic biodiversity with new distribution records, in situ photographs, and environmental data to offer a greater insight than ever before into Antarctic benthic biogeography.