Biographical note

Nicola Davies is a zoologist and award-winning writer. Her books for children include the best-selling A First Book of Nature, illustrated by Mark Hearld, Tiny: The Invisible World of Microbes, winner of the American Association for the Advancement of Science's prize for excellence in science (picture book category), Just Ducks, shortlisted for the Kate Greenaway Medal, Extreme Animals, Big Blue Whale and The Promise. Nicola lives in Abergavenny, Wales. www.nicola-davies.com @nicolakidsbooks

Luciano Lozano is a talented and versatile Spanish artist whose work has featured in magazines, books and newspapers, including the Guardian and the Sunday Times, and on cards, posters and calendars around the world. His books for children include Operation Alphabet, published by Thames & Hudson, and What I Like Most in the World, published by Tula Books. This is Luciano's first book for Walker. He lives in Barcelona, Spain. www.ilustrista.com