Alex Mustard / A diver explores Silfra Canyon, a deep fault filled with fresh water in the rift valley between the Eurasian and American tectonic plates at Thingvellir National Park, Iceland. May 2011. In this phot...

Magnus Lundgren / Juvenile Ocellaris / Common clownfish (Amphiprion ocellaris) looking out from its home in an anemone, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Andy Murch / Little gulper shark (Centrophorus uyato). Cape Eleuthera, Bahamas.

Andy Murch / Lemon shark (Negaprion brevirostris) surfacing with open mouth. Tiger Beach, Little Bahama Bank, Bahamas.

Alex Hyde / Red velvet mite (Trombidium holosericeum) running across soil where it hunts smaller invertebrates. Peak District National Park, Derbyshire, UK. April.

Guy Edwardes / Orange nectar bat (Lonchophylla robusta) feeding on Little clamshell orchid (Prosthechea cochleata), lowland rainforest, Costa Rica. November.

Sylvain Cordier / Indian wild ass (Equus hemionus khur) running, Wild Ass Sanctuary, Little Rann of Kutch, Gujarat, India

Lorraine Bennery / Brygoo's chameleon, / Leaf chameleon (Brookesia brygooi) tiny endemic chameleon. Madagascar.

Andres M. Dominguez / Little owl (Athene noctua) perched on sunflower, Cadiz, Andalusia, Spain, July

Andres M. Dominguez / Little owl (Athene noctua) taking shelter from the rain, Arcos de la Frontera, southern Spain. April.

Georgette Douwma / Translucent coral goby (Bryaninops erythrops) in Seapen (Virgularia gustaviana). Komodo National Park, Indonesia. Indo-West Pacific.

Jack Dykinga / Sandhill cranes (Antigone canadensis) taking off in dawn light. Bosque del Apache National Wildlife Refuge, New Mexico, USA, January

Jack Dykinga / Sandhill cranes (Antigone canadensis) feeding in pond, Bosque del Apache National Wildlife Refuge, New Mexico, USA. January.

Jack Dykinga / Sandhill cranes (Antigone canadensis) taking off and flying past a full 'super-moon' en route to feeding in neighboring fields. Bosque del Apache National Wildlife Refuge, New Mexico, USA, Jan...

Alex Mustard / RF - Portrait of Coral hermit crab (Paguritta harmsi) living in a hard coral colony. North Male Atoll, Maldives. Indian Ocean (This image may be licensed either as rights managed or royalty free.)

Jack Dykinga / Sandhill cranes (Antigone canadensis) in flight in late evening light, Bosque Del Apache, New Mexico, USA. December

David Woodfall / Two Little terns (Sterna albifrons) at the nest amongst Black oats (Avena strigosa) growing on shell rich sands Machair, North Uist, Scotland, UK, June.

David Woodfall / Little tern (Sterna albifrons) at the nest amongst Black oats (Avena strigosa) growing on shell rich sands Machair, North Uist, Scotland, UK, June.

David Woodfall / Little tern (Sterna albifrons) with newly hatched chick, Gronant dunes, Denbighshire, Wales, UK, June.

David Woodfall / Little tern (Sterna albifrons ) feeding sand eel (Hyperoplus spp) to young chick. Gronant Dunes, Denbighshire, Wales, UK, June.

David Woodfall / Little tern (Sterna albifrons) nest with three eggs in shingle ridge. County Wicklow, Ireland, June.

Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Jiri Lochman / Little red kaluta (Dasykaluta rosamodae) feeding on Ashby's Banksia (Banksia ashbyi) flower, Kennedy Range NP, Western Australia.

Jiri Lochman / Little red kaluta (Dasykaluta rosamodae) feeding on a grasshopper, Great Sandy Desert, Western Australia.

Jiri Lochman / Brush-tailed mulgara (Dasycercus blythi) Little Sandy Desert, Western Australia.

Phil Savoie / Little nomad bee (Nomada flavoguttata) covered in Dandelion pollen (Taraxacum offinicale) Monmouthshire, Wales, UK. September

Marie Read / Sandhill cranes (Grus canadensis) (Florida race), adult with two small chicks crossing highway, Kissimmee, Florida, USA, March.

Shane Gross / Larval Wonderpus octopus (Wunderpus photogenicus) drifting in the open ocean at night off Anilao, Philippines.

Shane Gross / Wonderpus octopus (Wunderpus photogenicus) in its juvenile or larval stage. At this stage it is transparent and drifts in the open ocean as plankton. Anilao, Philippines.

Bernard Castelein / Spotted owlet ( Athena brama), Keoladeo NP, Bharatpur, India

Juergen Freund / Wildlife carer Margit Cianelli holding Platypus (Ornithorhynchus anatinus) orphan, Atherton Tablelands, Queensland, Australia. Model released.

Houdin and Palanque / Madame Berthe's Mouse Lemur (Microcebus berthae), the world's smallest primate, Kirindy forest, Madagascar. Lenses for Conservation project.

Pedro Narra / Little owl (Athene noctua) Sado Estuary, Portugal. June

Pedro Narra / Little Tern (Sterna albifrons) feeding chick, Sado Estuary, Portugal. June

Andy Rouse / Little bittern, (Ixobrychus minutus), hunting in reeds, Bulgaria, June. This is a crop of 1637244. Highly honoured in the Bird Category of the Nature's Best Photography Competition 2019.