Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) feeding on plankton in the surface waters around the island of Coll, Inner Hebrides, Scotland, UK, June. 2020VISION Book Plate. Did you know? The largest Basking sha...

Alex Mustard / Basking shark (Cetorhinus maximus) rear view of shark feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Alex Mustard / Basking shark (Cetorhinus maximus) feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Tui De Roy / Marine iguanas (Amblyrhynchus cristatus) sky-pointing position to keep cool in sun. Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador, June.

Martin Dohrn / Wood ant (Formica rufa) basking to absorb heat from the sun which is brought back to the nest when they return, Europe

Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) feeding at the surface on plankton, Cairns of Coll, Inner Hebrides, Scotland, UK, June

Alex Mustard / 2020VISION / Rear view of a Basking shark (Cetorhinus maximus), Cairns of Coll, Inner Hebrides, Scotland, UK, June.

Alex Mustard / 2020VISION / Dorsal fin of a Basking shark (Cetorhinus maximus) at the surface, Cairns of Coll, Inner Hebrides, Scotland. UK, June.

Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) feeding in open water, Cornwall, England, UK, June

Mark Carwardine / Marine Iguanas (Amblyrhynchus cristatus), the only marine lizard, basking on volcanic rocks. Galapagos Islands, Ecuador, South America. Book plate from Mark Carwardine's Ultimate Wildlife Experiences.

Laurie Campbell / Male Adder (Vipera berus) basking on rock, Northumberland National Park, England, May

Alex Hyde / Purple emperor butterfly (Apatura iris) male on English Oak (Quercus robur) leaf basking with wings open, UK, Captive.

Alex Mustard / 2020VISION / Rear view of Basking shark (Cetorhinus maximus) feeding on plankton in the surface waters around the island of Coll, Inner Hebrides, Scotland, UK, June. Did you know? The basking shark is the world's...

Colin Varndell / Adder (Vipera berus) basking on pebble beach. Abbotsbury, Dorset, UK, March.

Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) with mouth wide open feeding on plankton concentrated in surface waters close to the island of Coll, Inner Hebrides, Scotland, UK, June 2011. 2020VISION Exhibition....

Danny Green / 2020VISION / Grass Snake (Natrix natrix) coiled, basking, Staffordshire, England, UK, April

Danny Green / 2020VISION / Adder (Vipera berus) coiled, basking on moss in the spring sunshine, Staffordshire, England, UK, April. Photographer quote: "OK so snakes are perhaps not as sexy as seals or foxes but I just can't get...

Danny Green / 2020VISION / Viviparous / Common lizard (Zootoca / Lacerta vivipara) basking in the early spring, Staffordshire, England, UK, April. Did you know? Common lizards live further north than any other reptile species.

Danny Green / 2020VISION / Adder (Vipera berus) basking in the spring, Staffordshire, England, UK, April

Danny Green / 2020VISION / Adder (Vipera berus) basking in the spring sunshine flicking tongue, England, UK, April. Did you know? The Adder is the only venomous snake in the UK.

Colin Varndell / Adult Adder (Vipera berus) basking on pebble beach. Abbotsbury, Dorset, UK, March.

Andy Rouse / Two Marine Iguana (Amblyrhynchus cristatus) basking on a volcanic rock. Puerto Egas, Galapagos, September.

Ian Coleman / Illustration of Basking shark (Cetorhinus maximus) feeding. Endangered / threatened species.

Alex Mustard / A split level digital composite showing a Basking shark (Ceterhinus maximus) feeding on plankton around St Michael's Mount, Cornwall, UK. June

Alex Mustard / View of gills and gill rakers of a Basking shark (Ceterhinus maximus) as it feeds in Cornwall, England. UK, East Atlantic Ocean. June

Alex Mustard / Split level of female California sea lions (Zalophus californianus) basking in the sun on the surface. La Paz, Baja California Mexico. Sea of Cortez, East Pacific Ocean. October

Nick Garbutt / Ring-tailed Lemur (Lemur catta) sun basking at dawn. Berenty Private Reserve, southern Madagascar.

Nick Garbutt / Three Ring-tailed Lemurs (Lemur catta) sun basking at dawn. Berenty Private Reserve, southern Madagascar. (digitally stitched image)

Murray Cooper / Andean Condor (Vultur gryphus) male basking, Ecuador

Tony Phelps / Rhombic skaapsteker (Psammophylax rhombeatus) adult basking on burnt restio amid spring flowers, dehoop Nature reserve, Western Cape, South Africa

Wild Wonders of Europe / Sá / Two Basking sharks (Cetorhinus maximus) Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) feeding just below the surface, Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) feeding, Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Two Basking sharks (Cetorhinus maximus) with two photographers, Mull, Scotland, June 2009. WWE INDOOR EXHIBITION. WWE OUTDOOR EXHIBITION.

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) swimming just below the surface with light patterns on body, Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Basking shark (Cetorhinus maximus) off the Island of Mull (Coll and Tiree Islands area) Scotland, June 2009 WWE BOOK

Dan Burton / Basking shark feeding off the Cornish coastline. Cornwall, UK.

Dan Burton / Basking shark feeding off the Cornish coastline. Cornwall, UK.

Dan Burton / Basking shark feeding off the Cornish coastline. Cornwall, UK.

Michael Pitts / Basking shark {Cetorhinus maximus} feeding with mouth wide open, off Cornwall, UK

Solvin Zankl / Namib desert beetle / Fog Basking Beetle (Stenocara gracilipes) drinking droplets of water which gather on its body during the early morning fog over the dunes, Namib desert, Namibia

Andy Sands / Grass snake (Natrix natrix) basking on tree stump among Bluebells, Hertfordshire, England. UK

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} two monkeys grooming and basking in the sun in spring, Jigokudani, Nagano, Japan

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} monkey basking in the winter sunshine, Jigokudani, Nagano, Japan

Dan Burton / Basking shark {Cetorhinus maximus} feeding, UK mouth open

Dan Burton / Basking shark {Cetorhinus maximus} feeding, UK mouth open

Andy Sands / Adder (Vipera berus) Male basking on log in spring, next to Celandine flowers, West Sussex, UK April

Luiz Claudio Marigo / Hoatzins basking in sun {Ophisthocomus hoazin} Amazonas, Brazil

Andy Sands / Duke of Burgundy butterfly {Hamearis lucina} basking with wings open on Cowslip, Captive, UK.

Andy Sands / Brown Hairstreak {Thecla betulae} male basking with wings open, captive, UK.

Andy Sands / Brown Hairstreak {Thecla betulae} female basking with wings open, Captive, UK.

Geoff Simpson / Adder {Vipera berus}, female basking. Eastern Moors, Peak District NP.

Anup Shah / Curious Hippoptamus {Hipopotamus amphibius} and basking Nile Crocodile {Crocodylus Niloticus} Mara River, Masai Mara, Kenya.

Pete Oxford / Black caiman basking with butterfly on snout {Caiman niger} Manu National Park, Peru

Doug Wechsler / Florida red bellied turtle {Pseudemys nelsoni}basking & stretching, Big Cypress NP FloridA

Luiz Claudio Marigo / Hoatzins basking in sun {Ophisthocomus hoazin} Amazonas, Brazil

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) breeding male basking with Sally Lightfoot Crab (Grapsus grapsus) scavenging dead skin, Hood Island, Galapagos Islands, Ecuador

Pete Oxford / Lions basking in sun {Panthera leo} Linyanti, Botswana

Michio Hoshino / Galapagos Sea Lion (Zalophus wollebaeki) group basking on beach, Galapagos Islands, Ecuador

Jim Brandenburg / Desert Spiny Lizard (Sceloporus magister) sunning on rock, Monument Valley National Monument, Arizona

Tui De Roy / Sally Lightfoot Crab (Grapsus grapsus) pair sharing boulder with Marine Iguanas (Amblyrhynchus cristatus) to escape high tide, Mosquera Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Land Iguana (Conolophus subcristatus) rare social group basking together, Fernandina Island, Galapagos Islands, Ecuador

Michio Hoshino / Galapagos Land Iguana (Conolophus subcristatus) sunning on rock, Galapagos Islands, Ecuador

Dan Burton / Basking shark feeding (Cetorhinus maximus) off Cornwall UK

Andrew Cooper / Adder basking in sun along coast, Devon, UK

Jeff Rotman / Basking shark feeding on plankton {Cetorhinus maximus} off Isle of Man, Irish sea

Alan James / Basking shark {Cetorhinus maximus} mouth wide open English coast, UK, Europe

Alan James / Basking shark - jaws open {Cetorhinus maximus} off Cornwall UK

Vladimir Medvedev / Female Eversmann's parnassian (Parnassius eversmanni) sun basking, Primorsky krai, Russian Far East, July.

Vladimir Medvedev / Female Eversmann's parnassian (Parnassius eversmanni) sun basking, Primorsky krai, Russian Far East, July.

Kevin Schafer / Flightless Cormorant (Phalacrocorax harrisi) drying wings, Galapagos Islands, Ecuador

Ingo Arndt / Red Wood Ant (Formica rufa) group sunbathing in early spring, Germany

Ingo Arndt / Red Wood Ant (Formica rufa) group sunbathing in early spring, Germany

Fabrice Cahez / Spanish / Leprous Terrapin (Mauremys leprosa) basking on rock. Extramadura, Spain, May.

Fabrice Cahez / Spanish / Leprous Terrapin (Mauremys leprosa) basking on rock with mouth open. Extramadura, Spain, May.

Mark Carwardine / Basking Shark Society shark watching boat passes Peel castle, Isle of Man

Mark Carwardine / Basking shark, dorsal fin at surface {Cetorhinus maximus} Isle of Man, UK.

Steven David Miller / Australian Freshwater crocodile (Crocodylus johnstoni) rests and warms in the sun on the banks of the upper Ord River accessed from Kununurra in Western Australia

Steven David Miller / Australian Freshwater crocodile (Crocodylus johnstoni) Tumbling Waters Caravan Park, Northern Territory, Australia

Steven David Miller / Australian Freshwater crocodile (Crocodylus johnstoni) raising body temperature in sun, sometimes it will open mouth to cool off, Tumbling Waters Caravan Park, Northern Territory, Australia

Steven David Miller / Australian Freshwater crocodile (Crocodylus johnstoni) raising body temperature in sun, Mary River, Northern Territory, Australia

Steven David Miller / Saltwater crocodile (Crocodylus porosus) warming body temperature in sun, Mary River, Northern Territory, Australia

Loic Poidevin / Ocellated lizard (Lacerta lepida) basking in sun, Extremadura, Spain

Loic Poidevin / Ocellated lizard (Lacerta lepida) on roof tile basking in sun, Extremadura, Spain

Ernie Janes / Blackbird (Turdus merula) male sun bathing, Norfolk, UK, June

Alex Mustard / Basking shark (Cetorhinus maximus) feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Alex Mustard / Copepods (Calanus finmarchicus) aggregated at the surface (reverse diel migration) providing a food source for Basking sharks, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East At...

Alex Mustard / Basking shark (Cetorhinus maximus) feeding at the surface on plankton, Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North East Atlantic Ocean, June

Alex Mustard / Basking shark (Cetorhinus maximus) feeding at the surface on plankton. Note the sea lampreys beneath the tail (Petromyzon marinus) Cairns Of Coll, Isle of Coll, Inner Hebrides, Scotland, UK, North Eas...

John Waters / Horned / Sand viper (Cerastes cerastes) basking in sun in desert, Qatar, Arabian Gulf, February 2012,

Tui De Roy / Marine iguana (Amblyrhynchus cristatus) hatchlings basking on lava. Puerto Villamil, Isabela island, Galapagos Islands, Ecuador, June.

Tui De Roy / Marine iguana (Amblyrhynchus cristatus) resting and basking together. Galapagos Islands, Ecuador, May.

Tui De Roy / Marine iguana (Amblyrhynchus cristatus) basking on sand near a 'stop' sign. Galapagos Islands, Ecuador, June.