Edited by María Begoña García, Manuel, Ane Mujika, and Neus Ibáñez Cortina, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) J. Richard Abbott, some rights reserved (CC BY-NC), uploaded by J. Richard Abbott
- 2. (c) Eric Keith, some rights reserved (CC BY-NC), uploaded by Eric Keith
- 3. (c) peupleloup, some rights reserved (CC BY-SA)
- 4. (c) Ron Vanderhoff, some rights reserved (CC BY-NC), uploaded by Ron Vanderhoff
