When looking through the 80 "Beagle" images at Acclaim Images.com this Marine Iguana was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Marine Iguana
A stock photo in horizontal format showing a marine iguana, amblyrhynchus cristatus, basking on rocks on the Galapagos island of Santiago

Some related terms for more images:
lizards,  ecuador,  animal,  animals,  galapagos,  iguana,  reptiles,  santiago,  amblyrhynchus cristatus,  wildlife,  marine iguana,  chris hammond,  iguanas,  south america,  marine iguanas,