[Machine Translation] The book warmly depicts a mother dolphin (Nocho) and her daughter (Heili), who still live in the clear blue waters of the Bahamas, Heili growing up in a school, and Nocho watching over them through 15 years of observation. This is the first picture book of the same title after winning the Japan Picture Book Award for "Makko no uta - Shiroi Oki na Ookina tomodachi" ("Song of the Makko - White Big Friend").