Abstract
During an expedition into the Arctic Ocean, in September 2004, six different species of amphipods were collected in the ice above 82°N. All six species (Apherusa glacialis, Gammarus wilkitzkii, Onisimus nanseni, O. glacialis, Pleusymtes karstensi and Eusirus holmii) were observed to be living adjacent to the sea ice or partly within its brine channels. The nature of the association with the ice for the last two species is uncertain, but the finding raises important questions regarding our knowledge of the sympagic fauna. Based on the obtained material, the two species E. holmii and P. karstensi are redescribed, and their association with the sea ice is discussed.
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