Roser Rimbau (1968) has published several titles. Her book The Letter, illustrated by Rocío Araya and published by Takatuka, forms part of the selection White Ravens 2018, of the 100 pieces of writing recommended by the Fundación Cuatrogatos Award 2019 and the OEPLI 2018 selection. She won the Comte Kurt Award in 2006 for Naïm has Lost his Colour! and the Modest Prats Children's Illustrated Story Award 2018 for The Deleted Planet. The Rosa Sardina collective, responsible for the illustrations, is dedicated to collaboration in the development of projects to raise awareness in young children. Its work is based on collage and the textures created by sketches by the 12 artists of the group. Lota the Sperm Whale is the first work to come from this exciting collaboration.