Benoit Stichelbaut / "Veolia Environment" (Roland Jourdain and Jean-Luc Nelias) at the start of the Transat Jacques Vabre race, departing Le Havre, France. 8th November 2009.

Benoit Stichelbaut / Fleet at the start of the Transat Jacques Vabre race, departing Le Havre, France. 8th November 2009.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010.

Benoit Stichelbaut / Jeanne Gregoire aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Fleet departing Concarneau for the Transat AG2R La Mondiale, Brittany, France. April 2010.

Benoit Stichelbaut / "Luisina" under sail at the Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Benoit Stichelbaut / Fleet under spinnaker, Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Benoit Stichelbaut / Helicopter flying over fleet at the Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Fleet departing Concarneau for the Transat AG2R La Mondiale, rounding a mark. Brittany, France. April 2010.

Adam White / Double Dutch, Cape Cornwall, Isambard, Isolde, Sir Tristan and Taran pulled up on Town Beach, St. Mary's, at the 19th World Pilot Gig Championships, Isles of Scilly, May 2008

Benoit Stichelbaut / Fabien Delahaye (foreground) and Armel Le Cléac'h aboard Figaro yacht "Brit Air", Transat AG2R, Port la Foret, Brittany, March 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Benoit Stichelbaut / Figaro yacht "Banque Populaire" with Jeanne Gregoire and Gerald Veniard, Transat AG2R, Port la Foret, Brittany, France. April 2010.

Merryn Thomas / Annie Januszewski and Mel King training to row across the Atlantic in the WoodVale Challenge. Bristol Floating Harbour, 17th September 2009. Model Released.

Jonathan Harrod / Double-banded Plover (Charadrius bicinctus) on ground nest, Lake Ellesmere, New Zealand

Jonathan Harrod / Double-banded Plover (Charadrius bicinctus) newly hatched chick, Lake Ellesmere, New Zealand

Benoit Stichelbaut / Jean le Cam and Nicolas Lunven on "Generali", Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Benoit Stichelbaut / Jeanne Gregoire and Gerald Veniard aboard Figaro yacht "Banque Populaire". Transat AG2R, Port la Foret, Brittany, France. April 2010. Editorial use only.

Benoit Stichelbaut / "Veolia Environment" (Roland Jourdain and Jean-Luc Nelias) at the start of the Transat Jacques Vabre race, departing Le Havre, France. 8th November 2009.

Benoit Stichelbaut / Figaro yacht "Cercle Vert" with Gildas Morvan and Bertrand de Broc. Transat AG2R La Mondiale, Port la Foret, Brittany, France, April 2010. Editorial use only.

Benoit Stichelbaut / Fleet rounding a mark, racing at the Transat AG2R La Mondiale Prologue, Concarneau, Brittany, France. April 2010.

Brent Stephenson / Adult breeding plumage male Banded Dotterel / Double-banded Plover (Charadrius bicinctus) running over mudflats. Manawatu Estuary, Manawatu, New Zealand, September.

Mike Read / Double banded plover (Charadrius bicinctus) on nest in rain, Kaikoura, New Zealand

Mike Read / Double banded plover (Charadrius bicinctus) on nest in rain, Kaikoura, New Zealand

John Abbott / Double-ringed pennant dragonfly (Celithemis verna) male at rest, Angelina National Forest, Texas, USA, June

Konrad Wothe / Double-eyed fig-parrot (Cyclopsitta diophthalma macleayana) feeding on figs in Rainforest, Daintree National Park, North Queensland, Australia, October

Robert Thompson / Double-striped pug moth (Gymnoscelis rufifasciata) resting on tree bark, Banbridge, County Down, Northern Ireland, UK, July

Benoit Stichelbaut / Fleet departing Concarneau for the Transat AG2R La Mondiale, rounding a mark. Brittany, France. April 2010.

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male feeding on beach, Moresby Range National Park, Queensland, Australia, December

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male on beach at night, Atherton Tablelands, Queensland, Australia, December

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male with chick, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male rear view, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male feeding on fruit from rainforest, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male on beach, drinking from stream, Queensland, Australia, December

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male in rainforest, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male feeding on fruit on rainforest floor, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male moving through rainforest, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male preening, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male feeding on fruit on rainforest floor, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male moving through rainforest, Atherton Tablelands, Queensland, Australia, November

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, adult male preening, Atherton Tablelands, Queensland, Australia, December

Kevin Schafer / Southern / Double-wattled cassowary (Casuarius casuarius) wild, 3 month chick hiding in father's feathers, Atherton Tablelands, Queensland, Australia, November

Daniel Heuclin / Double crested basilisk lizard (Basilicus plumifrons) female, studio shot, captive, from Central America

Terry Whittaker / 2020VISION / Cyclists, adult and child on double bicycle at Lyndon Visitor Centre, Rutland Water, Rutland, UK, April 2011

Terry Whittaker / 2020VISION / Cyclists, adult and child on double bicycle at Lyndon Visitor Centre, Rutland Water, Rutland, UK, April 2011. 2020VISION Book Plate.

Barry Mansell / Double-crested Cormorant (Phalacrocorax auritus) in wing-drying posture. Everglades, South Florida, USA, April.

Bryan and Cherry Alexander / Eco tourists in double kayaks paddling near Port Lockroy, Antarctic Peninsula. Editorial use only.

Bryan and Cherry Alexander / Eco tourists in a double kayak near Port Lockeroy, Antarctica. Editorial use only.

Sue Daly / Double Spiral Worm (Bispira volutacornis). Channel Islands, UK, July.

Sue Daly / Double Spiral Worm (Bispira volutacornis). Channel Islands, UK, May.

Bryan and Cherry Alexander / Tourists in double kayaks in Mikkelsen Harbour, Trinity Island, Antarctica, 2009.

Bryan and Cherry Alexander / Tourists in double kayaks paddling past glaciers during snowstorm. Mikkelsen Harbour, Trinity Island, Antarctica, 2009.

Hiroya Minakuchi / Green Basilisk (Basiliscus plumifrons) male, Selva Verde, Costa Rica

Hiroya Minakuchi / Green Basilisk (Basiliscus plumifrons) male, Selva Verde, Costa Rica

Hiroya Minakuchi / Green Basilisk (Basiliscus plumifrons) male, Selva Verde, Costa Rica

Hiroya Minakuchi / Green Basilisk (Basiliscus plumifrons) male, Selva Verde, Costa Rica

Sebastian Kennerknecht / Double-crested Cormorant (Phalacrocorax auritus) drying wings, La Jolla, California

Richard Du Toit / Double-banded Sandgrouse (Pterocles bicinctus) pair, Kruger National PArk, South Africa

Carol Walker / Quarter horses, mares and foals grazing on pasture at Double Diamond ranch, Nebraska, USA, July 2009

Carol Walker / Quarter horses, mares and foals grazing on pasture at Double Diamond ranch, Nebraska, USA, July 2009

Carol Walker / Quarter horse foal, Double Diamond ranch, Nebraska, USA

Carol Walker / Quarter horse, sorrel foal, Double Diamond ranch, Nebraska, USA, July 2009

Sandesh Kadur / A Khasi woman and children wash clothes along a stream. In the background is a living-root double-decker bridge in the background. These structures are created by entwining the aerial roots of the Fic...

Ann & Steve Toon / Double / Two banded courser (Rhinoptilus africanus) Kgalagadi Transfrontier Park, Northern Cape, South Africa, January

Jeff Vanuga / Double-crested Cormorant (Phalacrocorax auritus) in flight. Florida, USA, April.

Jeff Vanuga / Double-crested Cormorant (Phalacrocorax auritus) in flight over water. Florida, USA, April.

Diane McAllister / Double-crested cormorant (Phalacrocorax auritus) roosting during the daytime on the Anhinga Trail. The Everglades, Florida, USA, January

Brent Stephenson / Banded Dotterel / Double-banded Plover (Charadrius bicinctus) female against a blue sky. Ngaruroro River Estuary, Hawkes Bay, New Zealand, November.

Brent Stephenson / Banded Dotterel / Double-banded Plover (Charadrius bicinctus) male in breeding plumage sitting on nest amongst river stones. Ngaruroro River, Hawkes Bay, New Zealand, November.

LYNN M. STONE / Double-Crested Cormorant (Phalacrocorax auritus) adults in non-breeding plumage. Tarpon Springs, Florida, USA, November.

LYNN M. STONE / Double-Crested Cormorant (Phalacrocorax auritus), adult drying its wings on a sandy beach. Tarpon Springs, Florida, USA, November.

Tony Heald / Blue Crane (Anthropoides paradisea) chasing away a Double-Banded Courser (Rhinoptilus africanus). Etosha National Park, Namibia, January.

Kevin Schafer / Southern / Double-Wattled Cassowary (Casuarius casuarius) male with three chicks in forest habitat. The male raises young alone. Atherton Tablelands, Queensland, Australia.

Mark Hughes / Double-banded Plover (Charadrius bicinctus) chick, East Clive, Hawkes Bay, New Zealand

Mark Hughes / Double-banded Plover (Charadrius bicinctus), East Clive, Hawkes Bay, New Zealand