Glenn Bartley/ BIA / Frilled Coquette (Lophornis magnificus) male feeding on flower nectar, Atlantic Rainforest, Brazil

Andy Rouse / Polar Bear (Ursus maritimus) jumping between ice sheets, Svalbard, Norway, September 2009

Doug Allan / Mountains and inland ice sheets of Svalbard, Norway

Kerstin Hinze / Aerial view of frozen harbour of Langeoog in winter with ice sheets and snow, East Frisia, North Sea, Lower Saxony, Germany February 2012

Kerstin Hinze / Aerial view of frozen harbour of Borkum in winter with ice sheets and snow, East Frisia, North Sea, Lower Saxony, Germany February 2012

Sandra Bartocha / Ice sheets on the coast of the Baltic sea in Klein Zicker, Rugen, Germany, Baltic Sea, February 2011

Sandra Bartocha / Ice sheets on the coast of the Baltic sea in Klein Zicker, Rugen, Germany, Baltic Sea, February 2011

MYN / Denis Palanque / Squill two sheets (Scilla bifolia) woodland pond, Isere, Rhones-Alpes, France, March. meetyourneighbours.net project

MYN / Denis Palanque / Squill two sheets (Scilla bifolia) woodland pond, Isere, Rhones-Alpes, France, March. meetyourneighbours.net project

Benoit Stichelbaut / Skipper Ronan Treussart during La Soilitair Afflelou le Figaro on his yacht "Groupe Celeos", 2007

Benoit Stichelbaut / Skipper Roland Jourdain pulling in sheets on Monohull Open 60ft "Veolia Environment" during Vendee Globe 2008-2009, October 2008.

Benoit Stichelbaut / Rope detail on schooner "Goelette", Douarnenez International Maritime Festival, July 2006

Benoit Stichelbaut / Crew at night aboard Maxi yacht "Banque Populaire V", skippered by Pascal Bidegorry, practicing off Cadiz, Spain. March 2009.

Benoit Stichelbaut / Crew member with ropes aboard Decision 35 yacht "Banque Populaire", during the Challenge Julius Baer race, Geneva, May 2009.

Benoit Stichelbaut / Skipper Armel le Cleac'h at the helm of Monohull Imoca 60ft "Brit Air", Concarneau, Brittany, France. April 2008

Benoit Stichelbaut / Skipper Roland Jourdain making fast sheets on Monohull Open 60ft "Veolia Environment" during Vendee Globe 2008-2009, October 2008.

Benoit Stichelbaut / Winching on monohull 60ft "Britair" yacht, April 2008

Benoit Stichelbaut / Rope detail on schooner "Goelette", Douarnenez International Maritime Festival, July 2006

Benoit Stichelbaut / Crew member amongst ropes aboard Maxi yacht "Banque Populaire V", skippered by Pascal Bidegorry, practicing off Cadiz, Spain. March 2009.

Benoit Stichelbaut / Hauling a rope aboard Maxi yacht "Banque Populaire V", skippered by Pascal Bidegorry, practicing off Cadiz, Spain. March 2009.

Benoit Stichelbaut / Skipper Ronan Treussart during La Soilitair Afflelou le Figaro on his yacht "Groupe Celeos", 2007

Merryn Thomas / Bowsprit and post with ropes on foredeck of Bristol Pilot Cutter "Morwenna" moored in Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Sheets around belaying pins aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Sheets aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Sheets around belaying pins aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Wooden blocks aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Wooden blocks aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Merryn Thomas / Sheet tied around pin, Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Billy Black / Winch aboard Amel 54 ketch "Hollis", Caribbean. 2006. Property Released.

Billy Black / Runners aboard Stephens 53 yacht, Florida Bay, Florida, USA.

Billy Black / Sheet runner from boom aboard a Hunter 216. Mystic, Connecticut, August 2004.

Onne van der Wal / Woman sitting on the stern of a catamaran, cruising in the Grenadines, Caribbean. February 2010. Model released.

Onne van der Wal / Man gathering up sheet, sailing in the Grenadines, Caribbean. February 2010. Model released.

Onne van der Wal / Guard rail detail with sheet running underneath. Saint Barths Bucket Super Yacht Regatta, Caribbean, March 2009.

Onne van der Wal / Saint Barths Bucket Super Yacht Regatta, Caribbean, March 2009.

Onne van der Wal / Saint Barths Bucket Super Yacht Regatta, Caribbean, March 2009.

Rick Tomlinson / IRC2 "Southern Crescent" during a race at the 2009 Acura Miami Grand Prix, day 4, 8th March.

Rick Tomlinson / "Green Dragon" crew and "Puma" (background) in-port race training in Alicante, Spain, for the 10th Volvo Ocean Race 2008-2009. For EDITORIAL USE only.

Rob Cousins / Crew member of "Kaskelot" tall ship polishing the ship's bell, Bristol Harbour Festival, August 2008

Rick Tomlinson / Aerial view from the mast of SY "Adele", 180 foot Hoek Design, docked in English Harbour, Antigua, January 2006.

Rick Tomlinson / Holding a rope onboard SY "Adele"

Rick Tomlinson / Onboard ICAP "Leopard 3" with Mike Slade at the helm, Gordon Maguire tactician and Richard Faulkner trimming during Antigua Race Week 2008, day 1.

Rick Tomlinson / Boom damage on "Sojana" after the collision with "Lolita" during Antigua Race Week 2008. Day 2, halfway round the Island Race, Dickenson Bay to Falmouth anti clockwise.

Rick Tomlinson / Onboard ICAP "Leopard 3" with Mike Slade at the helm, Gordon Maguire tactician and Richard Faulkner trimming during Antigua Race Week 2008, day 1.

Benoit Stichelbaut / Winch and sheet on "Sun Odyssey" 35 yacht

Merryn Thomas / Sheets around belaying pins aboard Bristol Pilot Cutter "Morwenna", Bristol Floating Harbour, UK. April 2009.

Paul Harris / 2020VISION / Family looking at identification sheets on visit to the Westhay Nature Reserve, Somerset Levels, UK, June 2011, model released

Christian Ziegler / Scientists attract insects to white sheets by illuminating them with ultraviolet light, Barro Colorado Island, Panama

Billy Black / Women on the trampoline of a Sunsail Lagoon 410 in the BVI, April 2006. Model and property released.

Doug Allan / Sheets of broken ice floes with two Adelie penguins (Pygocelis adeliae); the sea ice reflects heat while the open sea absorbs it, Weddell Sea, Antarctica. Freeze Frame book plate page 110

Doug Allan / Submarine surfacing through ice sheet. Beaufort Sea, Alaska, USA, March. Freeze frame book plate page 131.

Jean E. Roche / Protection of river bank with shrubs planted within sheets of textile, Haute Loire, France, April 2011

Bryan and Cherry Alexander / Finger rafting (ice sheets meshing together) in new sea ice, Northwest Greenland, 1996. 40 BELOW bookplate.

Bryan and Cherry Alexander / Sheets of grease ice, fractured by the small swell on the Weddell Sea in October. Antarctica, October 2006.

Juergen Freund / Researcher Guido Westhoff catching a Spotted python (Antaresia maculosa) in a trash dump site. Dump sites and rubbish tips are favorite hiding places of reptiles. Snakes often take cover under sheets...

Juergen Freund / Researcher Guido Westhoff finding a Spotted python (Antaresia maculosa) in a trash dump site. Dump sites and rubbish tips are favorite hiding places of reptiles. Snakes often take cover under sheets o...

Juergen Freund / Researcher Guido Westhoff looking through a car dumpsite where snakes could be taking shelter under metal sheets or inside the car or engines. Queensland, Australia, February 2008

Adrian Davies / Gorse spider mite (Tetranychus lintearius) cobweb like sheets of silk in flowering Gorse bush (Ulex europaeus) England, UK, August 2010

Adrian Davies / Gorse spider mite (Tetranychus lintearius) cobweb like sheets of silk in flowering Gorse bush (Ulex europaeus) England, UK, August 2010

Juergen Freund / Man preparing strips of bark of Breadfruit / Paper mulberry tree {Artocarpus altilis} to make into sheets of bark cloth, Tonga, Melanesia, 2007

Juergen Freund / Richard Fitzpatrick's research on sharks are data documented in these sheets as part of the Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Tom Gilks / People holding sheets stating 'bp out of tar sands' at road side, part of 'The Wave' climate change march ahead of the Copenhagen climate summit, London, UK, 5th December 2009

Juergen Freund / Woman preparing strips of bark of Breadfruit / Paper mulberry tree {Artocarpus altilis} to make into sheets of bark cloth, Tonga, Melanesia, 2007

Juergen Freund / Women preparing strips of bark of Breadfruit / Paper mulberry tree {Artocarpus altilis} to make into sheets of bark cloth, Tonga, Melanesia, 2007

Rob Cousins / Crew member of Bristol Pilot Gig Club manoeuvering gig "Isambard" alongside pontoon, Bristol Floating Harbour, UK. July 2008, Model Released

Rob Cousins / Man leaning over bow to tie up Danish fishing boat at Underfall Yard, Bristol Floating Harbour, UK. July 2008, Model Released

Rob Cousins / Wooden cleat detail on small clinker-built punt. Bristol Floating Harbour, UK

Rob Cousins / Man leaning over bow to tie up Danish fishing boat at Underfall Yard, Bristol Floating Harbour, UK. July 2008, Model Released

Rob Cousins / Mooring rope attached to bollard on deck, Bristol Floating Harbour, UK

Niall Benvie / Broken ice sheets wahsed up on shore of estuary, Montrose Basin, Angus, Scotland.

Mark Moffett / Entomologist Terry Erwin fogs rainforest canopy with biodegradable pesticide, insects fall onto plastic sheets for collection and study, Pacaya-Samiria National Reservation, Peru

Pete Oxford / Paper sheets in vat at Jungshi paper making factory, Thimphu, Bhutan 2001

Pete Oxford / Paper sheets drying - made from {Daphne} tree fibres, Jungshi factory, Thimphu, Bhutan 2001

Mark Moffett / Leafcutter Ant (Apterostigma sp) in fungus garden, these ants use insect droppings and corpses as a base for their fungus gardens which often grown in sheets, Belize

Mark Moffett / Leafcutter Ant (Apterostigma sp,) in fungus garden, these ants use insect droppings and corpses as a base for their fungus gardens which often grown in sheets, Belize

Mark Moffett / Leafcutter Ant (Apterostigma sp,) in fungus garden, these ants use insect droppings and corpses as a base for their fungus gardens which often grown in sheets, Belize

Doug Allan / Aerial view of sea ice, spring, Svalbard, Norway. Open sea (top) solid white ice floe (middle)

Paul D Stewart / Illustration of 'Beagle laid ashore, River Santa Cruz'. Copperplate engraving, art by Conrad Martens, engraved by T. Landseer. Published by H. Colburn 1838. Plate from 'The Narrative of the Surveying...

Onne van der Wal / The crew working while racing a superyacht during the St Barths Bucket Regatta, St Barthelemy, Caribbean.

Onne van der Wal / J-Class "Velsheda" racing at Antigua Classic Yacht Regatta 2005, Caribbean.

Onne van der Wal / J-Class "Ranger" and schooner "Windrose" seen from aboard "Velsheda", Antigua Classic Yacht Regatta 2005, Caribbean.

Onne van der Wal / Wooden blocks that form part of the rigging system of the peak halyard of the top sail, resting against the mainsail of a gaff rigged classic boat, St. Barths Bucket Regatta, St Barthelemy, Caribbean.

Onne van der Wal / Rigging detail on board a Shannon Shoalsailor beachboat, Exuma, Bahamas.

Onne van der Wal / J-Class "Velsheda" racing at Antigua Classic Yacht Regatta 2005, Caribbean.

Onne van der Wal / Racing aboard J-Class "Velsheda" at Antigua Classic Yacht Regatta 2005, Caribbean.

Onne van der Wal / Traditional block and tackle on wooden yacht "Phoebe" at the Newport Wooden Boat Show, Rhode Island.

Onne van der Wal / Boom detail on board 12m yacht "Gleam" sailing off Newport, Rhode Island, USA. September 2006.

Onne van der Wal / Crew member onboard "Maximus" wrapping the sheet around a winch during the 2006 Newport to Bermuda Race.

Onne van der Wal / Crew member onboard "Maximus" holding a wrapped sheet around a winch during the 2006 Newport to Bermuda Race.

Onne van der Wal / Wooden block and rigging detail on board 12m yacht "Gleam" sailing off Newport, Rhode Island, USA, 2006.

Onne van der Wal / Young family anchored aboard a cruising yacht, with small boy swinging from the sheets. Rhode Island. Model released.

Onne van der Wal / A rolling hitch knot tied onto a sheet.

Onne van der Wal / Loaded winch aboard a classic cruising yacht. Rhode Island, USA.

Onne van der Wal / Winch detail onboard 140ft luxury schooner "Skylge", designed by André Hoek and built by Holland Jachtbouw, sailing in the French Riviera, France. Property released.

Onne van der Wal / Winch detail aboard a wooden boat at the Newport Wooden Boat Show, Rhode Island.

Onne van der Wal / Crew member onboard "Maximus" holding a wrapped sheet around a winch during the 2006 Newport to Bermuda Race. Property Released.

Rick Tomlinson / Team EF in the Whitbread Round the World Race, 1997-1998.