Yakushima is the wettest place in Japan with annual rainfall between 4 metres around the coast of the island and 10 metres in the mountains. It is famous for its ancient moss-covered forests, abundant waterfalls and rivers, island-adapted wildlife and providing inspiration for the Studio Ghibli movie Princess Mononoke. The forests also inspired the artist Yuko Takada to write and illustrate a book called Water Forest (J. 水の森; Mizu no mori). I bought this striking publication, which is entirely in Japanese, when I visited the World Heritage listed Yakushima in 2017. The sublime watercolour illustrations capture the intensity and beauty of life in the forests on the island. It is this celebratory book that I chose as the first to read in my quest to learn the language of Japan. In doing so I felt even closer to these remarkable rainforest ecosystems.