When looking through the 80 "Beagle" images at Acclaim Images.com this Galapagos Sea Lion 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:
Galapagos Sea Lion
A stock photo in horizontal format showing a sea lion on Chinese Hat Island in the Galapagos archipeligo

Some related terms for more images:
chris hammond,  sealions,  mammals,  galapagos,  beach,  ecuador,  sea lions,  seals,  chinese hat island,  animal,  animals,  south america,  conservation,  evolution,