河獺[oso] otter (Lutra lutra) 獺虎[rakko] sea otter (Enhydra lutris) 獺祭[dassai] arraying a number of reference books in order to compose poetry ユーラシア川獺[yuurashiakawauso] European otter (Lutra lutra)
海獺[umiuso] sea lion 小爪川獺[kotsumekawauso] Asian small-clawed otter (Aonyx cinerea) 獺魚を祭る[kawausouowomatsuru] one of the 72 climates (from the 16th to the 20th of the first lunar month)