In Antarctica, efforts are currently underway to build a long-term monitoring system for terrestrial and coastal organisms throughout the continent from the perspective of ecosystem conservation.Although it is necessary to accumulate information on biota in various parts of the continent to construct the system, the biota around Syowa Station, which is an observation base in Japan, has not yet been understood, especially for coastal marine animals.Therefore, since 2015, the research team has been conducting research based on the specimens stored in the National Institute of Polar Research and the newly collected specimens with the aim of elucidating the marine fauna along the coast of Syowa Station.

　A stereomicroscope and an optical microscope were used for two Gokai specimens collected from a depth of 22-1981 m in "Nishi no Ura" west of Syowa Station on January 1, 16 during the 8nd Antarctic Research Expedition. The morphology used was observed to clarify the species name. For individuals collected from 9m, the appearance of wearing a thick agar-covered tunicate is likened to a swelling in the frigid region of Antarctica, and the Japanese name "Kibukurehabouki", which means the swelling tunicate family. Was advocated.Since it became clear that the individual collected from a depth of 2 m was the Flabegraviera mundata of the same genus that had already been named, the Japanese name Kibukurehabouki was given and re-described.The depth of 9m is the record of collecting the genus Kibukurehabouki from the shallowest place in the world so far.

　This study revealed that undescribed species remain in relatively large animals that are close to 10 cm.Since it became clear that polychaetes of the same genus also inhabit the shallow waters that can be collected by scuba diving, research development using live individuals of the genus Kibukurehabouki is expected.