Gianumberto Accinelli is an entomologist and writer who shares his passion for nature through eco-narration projects. He currently teaches eco-narration at the Free University of Anghiari and Natural Sciences at the Manzoni Scientific High School. He has published several books, including The Wonderful Life of Butterflies and The Wonderful Life of Bees, The Invisible Threads of Nature, A Brief History of a Sunbeam, and Other Invisible Threads of Nature. Gianumberto is also the author of Up in the Blue Sky, the companion to Down in the Blue Ocean. In 2018, he won the prestigious German Youth Literature Award and the Bologna Children's Book Fair Award. Gianumberto lives in Bologna, Italy.

Giulia Zaffaroni is a high school support teacher. She has worked on projects as a freelance illustrator for publishing houses and other associations. She explores creative paths in art and drawing for children, and also offers projects on visual education and reading illustrated books. Giulia lives in Milan.

Award-winning opera singer, translator, and podcast host Nanette McGuinness has translated over 120 books and graphic novels for children and adults from French, Italian, German and Spanish into English, including the much-loved Geronimo Stilton Graphic Novels, as well as Tiki: A Very Ruff Year nominated for the 2023 Eisner and Harvey Awards) Alice on the Run: One Child's Journey Through the Rwandan Civil War 2023 GLLI YA Translated Book Prize Honor Book, 2023 Mosaic Prize winner and 2023 Harvey Award nominee), Luisa: Now and Then (2019 Stonewall Honor Book and 2020 GLLI YA Translated Honor Book) and California Dreamin' Cass Elliot Before the Mamas & the Papas (2018 Harvey Award). Nanette lives in the San Francisco Bay Area.