Selfridges department store and old Routemaster bus before they were withdrawn, on Oxford Street, London, England, United Kingdom, Europe

Old Routemaster bus before they were withdrawn, on Wesminster Bridge with London Eye in background, London, England, United Kingdom, Europe

Old Routemaster bus before they were withdrawn, on Wesminster Bridge with London Eye in background, London, England, United Kingdom, Europe

Giant tortoise feeding on leaves on the Galapagos Islands

A giant tortoise feeding on leaves and a bird on the Galapagos Islands

The back foot of a giant tortoise on the Galapagos Islands

Giant tortoise feeding on leaves on the Galapagos Islands

Giant tortoise feeding on leaves on the Galapagos Islands

Bubble Coral Physogyra lichtensteini with polyps withdrawn. Gili Islands, Lombok, Indonesia

Red Soft Coral with tentacles withdrawn

Graphic detail of the Brain Coral (Colpophyllia natans) with twists and withdrawn polyps, Barrier Reef, San Pedro, Ambergris Cay Island, Belize, Central America, Caribbean

A woman walks alone among the tall, leafless tree trunks in a forest, Arizona, United States of America

A girl crouches on the beach looking out over the ocean to the horizon at sunset, Long Beach, California, United States of America