A Rocha is a Christian nature conservation organisation, our name coming from the Portuguese for "the Rock", as the first initiative was a field study centre near the Alvor Estuary in Portugal. As Christians all over the world have recognised the urgent need to protect and restore important habitats, A Rocha has become a family of projects working in Europe, the Middle East, Africa, North America and Asia.

A Rocha projects are frequently cross-cultural in character, and share a community emphasis, with a focus on science and research, practical conservation and environmental education. All the A Rocha teams are dependent on the support of A Rocha members from around the world. Members contribute in many ways - by serving as volunteers on committees or at our centres, by their prayers and financial support and by their ideas and encouragement.