Marine iguanas on the beach, Galapagos Islands, Ecuador

Giant tortoise feeding on leaves on the Galapagos Islands

Land iguana camouflaged among cactus plants and feeding on leaf, Galapagos Islands, Ecuador

Land iguana , Galapagos Islands, Ecuador

Giant tortoise feeding on leaves on the Galapagos Islands

Land iguana , Galapagos Islands, Ecuador

Marine iguana on the rocks, Galapagos Islands, Ecuador

Giant tortoise feeding on leaves on the Galapagos Islands

Land iguana camouflaged among cactus plants, Galapagos Islands, Ecuador

Marine iguanas on the beach, Galapagos Islands, Ecuador

The Umbracle, landscaped walk with plant species indigenous to Valencia in Cuidad de las Artes y las Ciencias, City of Arts and Sciences, Santiago Calatrava (architect), Valencia, Spain

Close up of The Umbracle (detail), a landscaped walk with plant species indigenous to Valencia, City of Arts and Sciences, Cuidad de las Artes y las Ciencias, Santiago Calatrava (architect), Valencia, Spain

Alaska, Gray wolf stalking prey in deep winter snow.

Australia, full view of five kangaroos in the afternoon.

Australia, Kookaburra perched on a tree branch

Alaska, Gray wolf stalking prey in deep winter snow.

Hawaii, Big Island, Black Crowned Night Heron perched on a branch.

Alaska, Gray wolves charging through deep winter snow.

Bright pink plumerias floating in turquoise water.

Bright yellow plumeria's floating around one pink one in turquoise water.

Alaska, Gray wolves charging through deep winter snow.

Close-up of a cluster of pink painted daisies [chrysanthemum coccineum]

Australia, Mother and joey, Easter Great Kangaroo (Macropus giganteus).

Australia, Wallabee (genus halmaturus), crouched on grass looking into camera.

Gatito (Cumulopuntia sphaerica), Cactaceae indigenous to northern Chile, Spring bloom, Andean Pre-Cordillera, Socoroma, XV Arica and Parinacota Region, Chile

Gatito (Cumulopuntia sphaerica), Cactaceae indigenous to northern Chile, Spring bloom, Andean Pre-Cordillera, Socoroma, XV Arica and Parinacota Region, Chile