Alex Mustard / Yellowtail tang (Zebrasoma xanthurum) male and female turn belly to belly during spawning to ensure fertilization. Temple, Ras Umm Sid, Sharm El Sheikh, Sinai, Egypt. Red Sea. This action is very fast...

Morley Read / Gentian flowers (Gentiana cerastoides) moving in the wind, near Cotopaxi Volcano, Ecuador. (non-ex)

Alex Mustard / Three Pink anemonefish (Amphiprion perideraion) living in a purple skirted magnificent sea anemone (Heteractis magnifica) on a coral reef, below a small island. Misool, Raja Ampat, West Papua, Indones...

Nick Upton / Close-up of a Meadow brown butterfly (Maniola jurtina) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Nick Upton / Two Dark green fritillary butterflies (Argynnis aglaja) and a Narrow-bordered five-spot burnet moth (Zygaena lonicerae) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland...

Nick Upton / Six-spot burnet moth (Zygaena filipendulae), Marbled white butterflies (Melanargia galathea) and a Dark green fritillary (Argynnis aglaja) nectaring on a clump of Greater knapweed flowers (Centaurea s...

Nick Upton / Marbled white butterflies (Melanargia galathea) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Nick Upton / Marbled white butterflies (Melanargia galathea) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Georgette Douwma / Corkscrew or Long tentacle anemone (Macrodactyla doreensis). Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Banggai cardinalfish (Pterapogon kauderni) with a Corkscrew or Long tentacle anemone (Macrodactyla doreensis). Lembeh Strait, North Sulawesi, Indonesia.

Nick Upton / Mediterranean sea holly / Pyrenean eryngo (Eryngium bourgatii) flowering on montane pastureland, Covadonga, Picos de Europa, Asturias, Spain, August.

Konrad Wothe / Small tortoiseshell butterfly (Aglais urtica) in flight, with flower, Bavaria, Germany.

Ernie Janes / Hummingbird hawk moth (Macroglossum stellatarum) in flight feeding on Verbena flowers, England, UK. July.

Ernie Janes / Goldfinch (Carduelis carduelis) feeding on thistle flowers, England

Ernie Janes / Bluebells (Hyacinthoides non-scripta) and Beech (Fagus sylvatica) leaves, England, UK, May.

John Chan / Male Anna's hummingbird (Calypte anna) cleaning its beak on a twig, Southern California, USA, January.

Jack Dykinga / Steep valleys in the foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Phacelia (purple) with patches of orange California poppy (Eschscholzia californica). Carrizo Plain, Californi...

Jack Dykinga / Foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Purple Owl's Clover (Castilleja exserta) flowers. Carrizo Plain, California, USA. 30th March 2019.

Jack Dykinga / Steep valleys in the foothills of the Temblor Range, carpeted with Coreopsis (yellow) and Phacelia (purple) with patches of orange California poppy (Eschscholzia californica). Carrizo Plain, Californi...

Jack Dykinga / Purplemat (Nama demissum) and California goldfields (Lasthenia californica) growing through pebbles of a dry streambed. Joshua Tree National Park, Mojave Desert, California, USA. 25th March 2019.

Dave Bevan / Harvest mouse (Micromys minutus) climbing a Thistle (Cirsium), UK, July. Captive.

Guy Edwardes / Amethyst deceiver (Laccaria amethystina), New Forest National Park, Hampshire, England, UK. November.

Guy Edwardes / Sunrise over Colmer's Hill, Bridport, Dorset, England, UK. September 2011.

Guy Edwardes / Sunrise over Colmer's Hill, Bridport, Dorset, England, UK. September 2011.

Guy Edwardes / Sunrise over Colmer's Hill, Bridport, Dorset, England, UK. September 2011.

Ross Hoddinott / Common blue butterfly (Polyommatus icarus) resting on devil's bit scabious (Succisa pratensis), Vealand Farm, Devon, UK. August

Bernard Castelein / Deergrass (Scirpus cespitosus) at dawn among Heather (Calluna vulgaris), Groot Schietveld, Wuustwezel, Belgium

Steve Downer / Tracking shot of Bluebells (Hyacinthoides non-scripta) in flower, Millison's Wood, Solihull, West Midlands, UK May.

Franco Banfi / Three False clownfish (Amphiprion ocellaris) in Sea anemone (Heteractis magnifica) Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Theo Bosboom / Blue damselflies (Coenagrionidae) resting in heather flowers in dawn twilight, Hatertse vennen near Nijmegen, the Netherlands, August.

Ross Hoddinott / Small pearl-bordered fritillary butterfly (Boloria selene), Marsland mouth, Cornwall, UK. JUne 2016.

Jack Dykinga / Mass wildflower display Lanceleaf monolopia (Monolopia lanceolata) Great Valley phacelia (Phacelia civiliata) and purple Lemmon's mustard, (Caulanthus anceps) The Temblor Range in evening light in th...

Jack Dykinga / Massive wildflower display Lanceleaf monolopia 1+Monolopia lanceolata+2 Great Valley phacelia 1+Phacelia civiliata+2 and purple Lemmon's mustard 1+Caulanthus anceps+2 The Temblor Range in evening...

Phil Savoie / Garden bumblebee (Bombus hortorum) flying to Purple toadflax (Linaria purpurea) Monmouthshire, Wales, UK, July.

James Dunbar / Rose chafer (Cetonia aurata) nectaring on a thistle flower, England, UK, September.

Nick Upton / Slow motion clip of a Meadow brown butterfly (Maniola jurtina) and a Gatekeeper butterfly (Pyronia tithonus) nectaring on Saw-wort flowers (Serratula tinctoria), with a Silver-washed fritillary (Argyn...

Nick Upton / Close up view of a Marbled white butterfly (Melanargia galathea) nectaring on a Field scabious (Knautia arvensis) flower, with another trying to court with it, Wiltshire, England, UK, July.

Nick Upton / Slow motion cllip of a Marbled white butterfly (Melanargia galathea) nectaring on a Creeping thistle (Cirsium arvense) flower, with another trying to court with it, Wiltshire, England, UK, July.

Nick Upton / Close-up of a Dark green fritillary (Argynnis aglaja) nectaring on a Greater knapweed (Centaurea scabiosa) flower and flying off, Wiltshire, England, UK, July.

Sue Daly / Close-up of the limbs of a Spiny starfish (Marthasterias glacialis) showing its many tube feet moving over the seabed, Sark, British Channel Islands, UK, August.

Sue Daly / Spiny starfish (Marthasterias glacialis) moving its arms over the seabed, showing use of its tube feet, Sark, British Channel Islands, UK, August.

Jack Dykinga / Sand verbena (Abronia) flowering in a dried up bush, Anza-Borrego State Park, California, USA, March 2017. These plants are flowering during on largest 'super-bloom in years' caused by increased winte...

Jack Dykinga / Hairy bird's foot morning glory (Ipomoea leptotoma) flower over Prickly pair (Opuntia sp) Catalina State Park, near Tucson, Arizona, USA, August.

Andy Sands / Amethyst Deceiver (Laccaria amethystina) two young toadstools growing up from mossy log, Buckinghamshire, England, UK, September

Alex Mustard / Maldivian anemonefish (Amphiprion nigripes) shelters against a closed magnificent sea anemone (Heteractis magnifica). Male Atoll, Maldives. Indian Ocean.

Bence Mate / Grey heron (Ardea cinerea) with lightning storm at night. Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. May 2012.

Bence Mate / Lightning storm over Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. May 2012.

Alex Hyde / Painted lady butterfly (Vanessa cardui) on flower, Peak District National Park, Derbyshire, UK. September.

Andres M. Dominguez / Dew on spiderweb with Grey-leaved cistus (Cistus albidus) Sierra de Grazalema Natural Park, El Bosque, southern Spain, April.

Charlie Summers / Andrommeda (M31) with its two syster galaxies (M32 and M110) Eastern Colorado. 8 November 2015. Taken with digital focus stacking.

Claudio Contreras / Texas indigo snake (Drymarchon melanurus erebennus) close up amongst Vervain (Glandularia sp.) flowers, Laredo Borderlands, Texas, USA. April

Melvin Grey / Purple-throated woodstar hummingbird (Calliphlox mitchellii) hummingbird male flying to garden flower, Mindo Loma, Ecuador

Melvin Grey / Purple gallinule (Porphyrula martinica) adult. Wakodahatchee Wetlands, Florida, USA, May.

Philippe Clement / Long-spurred violet (Viola calcarata) in flower, Val Veny, Italian Alps, Italy, June

Sven Zacek / Low angle shot of Ural owl (Strix uralensis) female returning to its nest at night. Southern Estonia, May.

Sven Zacek / Hepatica (Hepatica nobilis) white morph and normal blue morph, Southern Estonia, April.

Chris Mattison / Stigma and anthers of Cactus flower (Notocactus crassigibbus). Cultivated plant. Focus-stacked image.

John Cancalosi / American bullfrog (Lithobates catesbeianus) swimming near Water lilies (Nymphaea sp) Washington DC, USA. July.

Juan Carlos Munoz / Partially harvested Lavender (Lavendula angustifolia) fields, Valensole Plateau, Alpes Haute Provence, France, July 2015.

Juan Carlos Munoz / Lavender (Lavendula angustifolia) fields in front of Senanque Abbey, Gordes Village, Provence, France, July 2015.

Juan Carlos Munoz / Lavender (Lavendula angustifolia) fields in front of Senanque Abbey, Gordes Village, Provence, France, July 2015.

Juan Carlos Munoz / Hut in Lavender (Lavandula angustifolia) fields, Valensole Plateau, Alpes Haute Provence, France, June 2015.

Juan Carlos Munoz / Lavender (Lavandula angustifolia) fields, Valensole Plateau, Alpes Haute Provence, France, June.

Juan Carlos Munoz / Honeybee (Apis melifera) visiting Lavender (Lavendula angustifolia) in lavender fields, Valensole Plateau, Alpes Haute Provence, France, July.

Solvin Zankl / Portuguese man-of-war (Physalia physalis) colony, underwater Sargasso Sea, Bermuda

Solvin Zankl / Portuguese Man-of-War (Physalia physalis) close up of tentacles, Sargasso Sea, Bermuda

MYN / Corne van der Linden / Variety of orchids from the Banksia Woodland, Swan Coastal Plain. Including Pansy orchid (Diuris magnifica), Slender sun orchid (Thelymitra vulgaris), Cowslip orchid (Caladenia flava), Plain sun orchi...

George Sanker / Purple gallinule (Porphyrula martinica) in mangrove swamp. Everglades National Park, Florida, USA. March.

Pascal Pittorino / Horned pansy (Viola cornuta) in botanic garden, Var, France, March.

Pascal Pittorino / European honey bee (Apis mellifera) collecting pollen and nectar from Borage (Borago officinalis) Var, Provence, France, March.

Pascal Pittorino / Ground beetle (Carabus hispanus) resting on a leaf of Hydrangea (Hydrangea sp), Lozere, Cevennes, Languedoc Roussillon, France, July.

Pete Oxford / Three granite peaks of Paine mountain range, Torres del Paine National Park, Patagonia, Chile.

Gabriel Rojo / Close up of Passionflower (Passiflora caerulea) La Pampa, Argentina.

Alex Hyde / Green Dock Beetle (Gastrophysa viridula) female with huge abdomen swollen with eggs. Peak District National Park, Derbyshire, UK. May.

Alex Hyde / Orange Tip Butterfly (Anthocharis cardamines) male resting on Bluebell (Endymion / Hyacinthoides nonscriptus). Peak District National Park, Derbyshire, UK. April.

Georgette Douwma / Stove-pipe sponge (Aplysina archeri) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Row pore rope sponge (Aplysina cauliformis) Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Cyril Ruoso / European hedgehog (Erinaceus europaeus) at dusk, Picardy, France. Non-ex

Ole Jorgen Liodden / Black-winged stilt (Himantopus himantopus) with out of focus Lesser flamingos (Phoenicopterus minor) standing behind, Lake Nakuru, Kenya

Ole Jorgen Liodden / Heartsease / Wild pansy (Viola tricolor) flower, Norway, May.

Juergen Freund / Split level of large Purple crown jellyfish (Netrostoma setouchina) in shallows of mangroves. Mali Island, Macuata Province, Fiji, South Pacific.

Barry Bland / Fried egg jelly fish (Cotylorhiza tuberculata) Mediterranean Sea.

Michel Roggo / Iceberg in the sea outside the Kangia Ilulissat Icefjord. Iceberg from the Sermeg Kujalleg Glacier, UNESCO World Heritage Site, Kalaallit Nunaat, Greenland, August 2014. Photographed for The Freshwate...

Marie Read / American goldfinch (Carduelis tristis) male in breeding plumage, perched in Eastern redbud flowers in spring, New York, USA May.

Floris van Breugel / Aurora Borealis over yellow tent lit from within and mountainous scenery, Arrigetch Peaks, Gates of the Arctic National Park, Brooks Range, Alaska, USA, August 2014.

Constantinos Petrinos / Yellow stripe clingfish (Diademichthys lineatus) living in association with the Fire Urchin (Astropyga radiata) Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Purple short tentacle mushroom coral (Fungia sp.) close up of polyps. Lembeh Strait, North Sulawesi, Indonesia.

Constantinos Petrinos / Peacock-tail anemone shrimp (Periclimenes brevicarpalis) living commensally with the Branching Sea Anemone (Actinodendron glomeratum). Lembeh Strait, North Sulawesi, Indonesia.

David Tipling / Fern growing among Bluebells (Hyacinthoides non-scripta) Foxley Wood, Norfolk, UK, April.

David Tipling / Red campion (Silene dioica) flowering in woodland amongst Bluebells and Greater stitchwort. Thursford Wood, North Norfolk, UK, May.

Dong Lei / Purple bergenia (Bergenia purpurascens) in flower, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China.

Dong Lei / Blue poppy (Meconopsis lyrata) Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China.

David Pattyn / Heathland landscape at sunset, Kampina Nature Reserve, Netherlands. August 2006.

Wild Wonders of Europe / Bartocha / Early purple orchid (Orchis mascula) on the Forca Canapine, Monti Sibillini National Park, Italy, May.

Ammonite / Slow motion clip of a White-tailed bumble bee (Bombus lucorum) covered in pollen taking off from a flower, France, June.