A great Frigate bird flies over Ecuador's Galapagos islands April 30,2007, where British naturalist Charles Darwin conceived his theory of evolution. Growing tourism has conservationists worried over damage to the volcanic islands' unique ecosystem. REUTERS/Guillermo Granja (ECUADOR) 

A frigate bird flies over a lake on Santa Cruz in the Galapagos
Archipelago, August 1,2003. The Galapagos Islands are located 1000 km
off the coast of Ecuador. This year it is celebrating the 25th
anniversary as a World Natural Heritage, as declared by UNESCO in 1978.
REUTERS/Guillermo Granja

GG/GN 

A frigate gracefully takes to the sky above the San Cristobal Island, January 28, 2001. As efforts to clear away the stricken, semi-submerged tanker to blame for fouling the archipelago's cristalline waters foundered, Galapagos National Park teams scoured the coastline armed with nets and cleaning materials. [Luckily however myriad exotic species including iguanas, flightless cormorants, sea lions and the famous Galapagos giant tortoises, a mix that inspired 19th century naturalist Darwin to devise his theory of evolution, have largely escaped contamination.] 

A frigate gracefully takes to the sky above the San Cristobal Island, January 28, 2001. As efforts to clear away the stricken, semi-submerged tanker to blame for fouling the archipelago's cristalline waters foundered, Galapagos National Park teams scoured the coastline armed with nets and cleaning materials. Luckily however myriad exotic species including iguanas, flightless cormorants, sea lions and the famous Galapagos giant tortoises, a mix that inspired 19th century naturalist Darwin to devise his theory of evolution, have largely escaped contamination.

GG/ME