He has worked since 1994 as a photographer, journalist and documentary filmmaker. His documentary film Looking for the Wild (Unai's journey) was released in 2016 in Madrid and was officially selected as a candidate for the Goya Awards as best documentary film.
He has published a dozen books on wildlife and nature and environmental issues. His latest book, La llamada del Puma (2015)shows a journey of more than a year across all continents in search of wild animals with his family.
In 2014, is published Sleeping amongst Wolves about the Iberian wolf in the wild. Before, in 2013, he published Looking for Fochas, which shows a year of observation with his son in the lake of Banyoles where he lives with his family. Among his previous works, La Mirada Salvaje- Encounters with the Iberian fauna stands out. This book gathers more than a hundred animals photographed in freedom in their Iberian habitats and narrates in first person the encounters with the most representative species. Other books of the author are: The Iberian Imperial Eagle, The Cantabrian Bear, Aether and Planet Football. Many of his books have been translated into several languages.