Galápagos Islands are taken off the Unesco endangered list

A giant tortoise at a mud wallow on Volcan Alcedo. Scientists have successfully reintroduced giant tortoises to a Galápagos island where the species once teetered on extinction Photograph: Frans Lanting/Corbis A Sally lightfoot crab. The species inhabits the Galápagos Islands and is found along the western coast of South America Photograph: Steppes Discovery A whale shark ( Rhincodon typus ). They have been filmed swimming through what researchers think might be a migratory corridor near the Galápagos Islands Photograph: Henry Walcott/AP A zebra moray eel. The species can grow up to 1.5 metres long Photograph: University of Southampton A blue-footed booby on Galápagos Islands. The bird dives into the ocean, often from a great height, and swims underwater for its prey Photograph: Tim Graham/Tim Graham/Getty Images Marine iguanas on San Cristobal Island, unique to the archipelago, may now be at risk from mosquitoes introduced by tourist planes and boats Photograph: Rodrigo Buendia/AFP/Getty Images Monarch butterfly ( Danaus plexippus ), frequenting scalesia villosa flowers, on Floreana Island, Galapagos Islands Photograph: Tui De Roy/Minden Pictures/Getty Images A shoal of white salema fish ( Xenithys agassizi ) underwater off San Cristobal island, Galápagos Archipelago Photograph: Pablo Cozzaglio/AFP/Getty Images A spiny lobster photographed at the Wolf Island site Photograph: University of Southampton A scalloped hammerhead shark ( Sphyrna lewini ), swimming among reef fish off the Galápagos Islands Photograph: Fred Bavendam/Minden Pictures /Getty Images A land iguana carrying a lava lizard on its back, at the Charles Darwin Foundation on Santa Cruz, in the Galápagos Archipelago Photograph: Guillermo Granja/Reuters A nudibranch, a form of marine mollusc, against brightly coloured coral at Wolf Island. A three-year study in the Galápagos led by the University of Southampton has discovered new species of coral and rediscovered species thought extinct in the northern Wolf and Darwin islands Photograph: University of Southampton