こせみくじら 小背美鯨 LinksSentence search for 小背美鯨Sentence search for こせみくじらSentence search for コセミクジラKanji details for 小, 背, 美 and 鯨Edit in JMdict Noun1. pygmy right whale (Caperea marginata)Usually written using kana aloneOther formsコセミクジラ Discussions Log in to talk about this word.