Daniela Weil was born in Brazil. She attended the International School in São Paulo, where she was surrounded by people and cultures from around the world. It was also there that she developed a passion for nature, art, and writing. After earning a BA in biology from Brandeis University in Boston, Weil became a field research biologist. She participated in various whale projects, including illustrating the first field guide for whales and dolphins in Brazil. She wrote and illustrated a series of picture books in Brazil that teach kids about the benefit of earthworms (A Minhoca Dorminhoca and A Minhoca Dorminhoca em Apuros, Paulinas Publisher).
Being a mother rekindled her desire to share her passion about the natural world. She joined the Society of Children’s Book Writers and Illustrators (SCBWI) and specialized in writing nonfiction and science for kids. After writing several articles on science and history, she ventured into books. Weil attended the Texas Library Association annual conference with her SCBWI group and met the folks from Pelican, who were intrigued by her middle grade book idea. As the project developed, her research took her back to Brazil and across the world chasing Asser’s experiences. When not on the hunt for new experiences, Weil makes her home in Austin, Texas, with her husband, Erik, and daughter, Lucy.