Pete Oxford / Galapagos penguin (Spheniscus mendiculus) diving underwater, Bartolome Island, Galapagos, endemic

Pete Oxford / Galapagos penguin (Spheniscus mendiculus) diving underwater, Bartolome Island, Galapagos, endemic.

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Tui De Roy / Lava Cactus (Brachycereus nesioticus) endemic pioneering species growing only on young lava flows, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) portrait, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Green Sea Turtle (Chelonia mydas) female hauling out on beach, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) playing with snorkeler, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) underwater in feeding foray in coastal shallows, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) pair diving in typical coastal feeding areas, Bartolome Island, Galapagos Islands, Ecuador

Pete Oxford / Whitetip reef sharks {Triaenodon obesus} in shallows near shore, Bartolome Is, Galapagos

Alex Mustard / Portrait of a Galapagos penguin (Spheniscus mendiculus) on a rock. Bartolome Island, Galapagos National Park, Galapagos Islands. East Pacific Ocean

Tui De Roy / Galapagos penguin (Spheniscus mendiculus) pair, Bartolome Island, Galapagos

Pete Oxford / Galapagos Penguin (Spheniscus mendiculus) hunting fish, Bartolome Island, Galapagos Islands, Ecuador

Sylvain Cordier / Lava cactus (Brachycereus nesioticus), Bartolome Island, Galapagos Islands.

Ross Hoddinott / Lava lizard (Tropidurus spp.) eating painted locust, Bartolome Island, Galapagos, Ecuador. May 2015

Ross Hoddinott / Lava lizard (Tropidurus) on sand, Bartolome Island, Galapagos, Ecuador. April.

Ross Hoddinott / Lava lizard (Tropidurus) on sand, Bartolome Island, Galapagos, Ecuador. April.

Kristel Richard / Young couple jumping through fire to purify their horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Young man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Young woman jumping through fire to purify her horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Young man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Young man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Ãvila Province, Castile and León, Spain, January 2014.

Kristel Richard / Man jumping through fire to purify his horse, during the Luminarias festival, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, January 2014.

Kristel Richard / Man on horse taking part in the Luminarias festival, when riders jump through fire to purify their horses, held every January in San Bartolome de Pinares, Avila Province, Castile and Leon, Spain, Janu...

Tui De Roy / Pinnacle Rock, remnant of old eroded tuff cone, Bartolome Island. Galapagos Islands, June 2011.

Tui De Roy / Pinnacle Rock, iconic Galapagos Landmark formed of eroded tuff stone, Bartolome Island, Galapagos, Ecuador. June 2011.

Mike Wilkes / Galapagos Penguin (Spheniscus mendiculus) on rock calling. Bartolome, Galapagos Islands.

Mike Wilkes / Galapagos Penguin (Spheniscus mendiculus) on rock calling. Bartolome, Galapagos Islands.

Pete Oxford / Galapagos penguin (Spheniscus mendiculus) diving underwater, Bartolome Island, Galapagos, endemic

Bryan and Cherry Alexander / Dive boat by Pinnacle Rock, the eroded remains of a tuff cone, by the the volcano on Isla Bartolome. Galapagos, January 2005.

Bryan and Cherry Alexander / Pinnacle Rock, the eroded remains of a tuff cone, by the the volcano on Isla Bartolome. Santiago, Galapagos, January 2005.

Bryan and Cherry Alexander / Parasitic Cone, a cinder cone on the side of the volcano on Isla Bartolome. Santiago, Galapagos, January 2005.

Pete Oxford / Galapagos Penguin (Spheniscus mendiculus) coming up to surface, Bartolome Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Penguin (Spheniscus mendiculus) diving, Bartolome Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Penguin (Spheniscus mendiculus) swimming, Bartolome Island, Galapagos Islands, Ecuador

Murray Cooper / Volcanic formations, Bartolome Island, Galapagos Islands, Ecuador

Angelo Gandolfi / San Bartolome Templar Church-hermitage, Rio Lobos canyon, Castilla y Leon, Spain. March 2006.

Angelo Gandolfi / San Bartolome Templar Church-hermitage, Rio Lobos canyon, Castilla y Leon, Spain. March 2006.

Juan Carlos Munoz / Tourists walking along walkway on Bartolome Island, Galapagos, January 2009

Juan Carlos Munoz / Lava cactus {Brachycereus nesioticus} growing in volcanic landscape, Bartolome Island, Galapagos, January

Juan Carlos Munoz / Lava cactus {Brachycereus nesioticus} Bartolome Island, Galapagos, January

Juan Carlos Munoz / Bartolome Island, Galapagos, January 2009

Juan Carlos Munoz / Lava cactus {Brachycereus nesioticus} Bartolome Island, Galapagos, January

Tim Laman / Galapagos penguins (Spheniscus mendiculus) standing on the shore, Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatcher (Haematopus palliatus) Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatcher (Haematopus palliatus) Bartolome Island, Galapagos Islands.

Tim Laman / Galapagos penguins (Spheniscus mendiculus) standing on the shore, Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatcher (Haematopus palliatus) with open beak, Bartolome Island, Galapagos Islands.

Tim Laman / Small ground finch (Geospiza fuliginosa) feeding on a bush, Bartolome Island, Galapagos Islands.

Tim Laman / Galapagos yellow warbler (Dendroica petechia aureola), Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatchers (Haematopus palliatus) feeding on the shore, Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatcher (Haematopus palliatus) Bartolome Island, Galapagos Islands.

Tim Laman / American oystercatcher (Haematopus palliatus) feeding on the shore, Bartolome Island, Galapagos Islands.

Tim Laman / Lava cone on Bartolome Island, Galapagos Islands, Nov 2007.

Tim Laman / American oystercatcher (Haematopus palliatus) feeding on the shore, Bartolome Island, Galapagos Islands.

Tim Laman / Santiago Island from Bartolome Island, Galapagos Islands. Nov 2007.

Tim Laman / Lava cactus (Brachycereus nesioticus) growing on lava, Bartolome / Bartholomew Island, Galapagos, June 1993

Jack Dykinga / A view across Bartolome Island and Pinnacle Rock, with Santiago Island in the background, Galapagos

Jack Dykinga / Evening light over boats moored in the sound between Bartolome Island and Isabela Island (background), Galapagos

Pete Oxford / Pinnacle rock - an eroded tuff cone on Bartolome Is, Galapagos 2006

Pete Oxford / Bartolome Island landscape of lava and ash. Galapagos Islands 2006

Pete Oxford / Grey matplants (Tiquilia nesiotica / Boraginaceae) Endemic herb colonises the ash slopes of Bartolome Island. Galapagos Islands

Pete Oxford / Tourist looking at a landscape of lava and ash, Bartolome Island, Galapagos

Mark Jones / Galapagos Penguin (Spheniscus mendiculus) swimming underwater, Bartolome Island, Galapagos Islands, Ecuador

Pete Oxford / Brown sea cucumber {Isostichopus fuscus} Bartolome Island, Galapagos Islands

Tom Vezo / Cactus in barren landscape, Bartolome Island, Galapagos Islands, South America

MORLEY READ / Bartolome island, Galapagos

MORLEY READ / Whitetip reef sharks {Triaendon obesus} basking in shallow water, Bartolome island, Galapagos

Pete Oxford / Galapagos sealion (Zalophus wollebaeki) resting on beach with lava lizard on head, Bartolome Island, Galapagos Islands, South America

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Pete Oxford / Bartolome Island a landscape of lava and ash, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Penguin (Spheniscus mendiculus) swimming in shallow water, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) feeding on schooling fish in coastal shallows, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) in typical coastal habitat, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) portrait, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Pinnacle Rock, tufa cone formation and volcanic beach, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) group diving in search of small fish in coastal shallows, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Green Sea Turtle (Chelonia mydas) female nesting at dawn, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Green Sea Turtle (Chelonia mydas) female digging nest at dawn, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Penguin (Spheniscus mendiculus) flock swimming underwater feeding foray, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Visitors snorkeling in clear waters beneath Pinnacle Rock, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Visitor admiring classic summit view of Pinnacle Rock and volcanic landscape, Bartolome Island, Galapagos Islands, Ecuador

Pete Oxford / Landscape with Pinnacle Rock, Bartolome Island, Galapagos Islands

Pete Oxford / Marine iguana {Amblyrhunchus cristatus} Bartolome Is Galapag. Book page 25

Bernard Castelein / Isla Bartolome, Galapagos

Pete Oxford / Galapagos penguin on rock(Spheniscus mendiculus) and Sally Lightfoot crab, Galapagos

Pete Oxford / Galapagos penguin in surf, {Spheniscus mendiculus}, Bartolome Is, Galapagos

Martin van Lokven / Cracked lava, Bartolome Island, Galapagos Islands, Ecuador

Martin van Lokven / Cracked lava, Bartolome Island, Galapagos Islands, Ecuador

Martin van Lokven / Cracked lava, Bartolome Island, Galapagos Islands, Ecuador

Martin van Lokven / Cracked lava, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) taking flight, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) plunge diving, Bartolome Island, Galapagos Islands, Ecuador