Jurgen Freund / Timelapse of a Scolymia coral (Mussidae) feeding, lit with a UV light, Cairns, North Queensland, Australia.

Floris van Breugel / Various fluorescent minerals : 1Willemite, New Jersey, 2: Willemite and Calcite, New Jersey, 3: Fluorite, Ohio, 4: Willemite and Calcite, New Jersey. 5: Fluorite, California. 6: Scheelite, California....

Andy Rouse / 2020VISION / Blue Tit (Cyanistes / Parus caeruleus) perched on lichen-covered twig. Wales, UK, February. Did you know? The front of a Blue tit's head glows brightly under UV light, which is used by females to choo...

Jurgen Freund / Fluorescent coral viewed under UV light, Misool, Raja Ampat, West Papua, Indonesia, sequence 2/2

Albert Lleal / Giant Desert Hairy Scorpion (Hadrurus arizonensis) photographed under ultraviolet light showing fluoresence, native to southern North America and northern Mexico

Ingo Arndt / Emperor Scorpion (Pandinus imperator) photographed under ultraviolet light, Africa

Piotr Naskrecki / Scorpion (Opisthacanthus asper), seen in UV light, Gorongosa National Park, Mozambique

Paul Bertner / Scorpion, seen under UV light, Bilsa Biological Reserve, Ecuador

Paul Bertner / Thick-tailed Scorpion (Tityus sp), under UV light, Sani Lodge, Ecuador

Piotr Naskrecki / Scorpion (Brotheas sp) in defensive posture seen under ultraviolet light, Suriname

Piotr Naskrecki / Thick-tailed Scorpion (Tityus sp) under ultraviolet light, Suriname

Piotr Naskrecki / Scorpion young on the back of their mother, their soft cuticle is not yet reflecting ultraviolet light, Brownsberg Nature Park, Surinam

Adrian Davies / Giant African pink-footed millipede (Archispirostreptus gigas) on moss, fluorescing under UV light. Captive, occuring in Eastern Africa and Southern Arabia. Sequence 2/2.

Adrian Davies / Marsh Marigold (Caltha palustris) comparison with normal, and UV reflected light. Surrey, England, U. March.

Adrian Davies / Marsh marigold (Caltha palustris) flower, showing - visible, UV and 'bee vision' Surrey, England, UK, March.

John Cancalosi / Fossil ammonite (Desmoceras sp.) under UV light, from the Upper Early Cretaceous period, Mahajanga Province, Madagascar

Heather Angel / Elephant yam (Amorphophallus paeoniifolius) in UV light, lower band with female flowers, male flowers above.

Heather Angel / Flowering rush (Butomus umbellatus), drops of nectar fluorescing in UV light. Surrey, England, UK. Focus stacked.

Heather Angel / Voodoo lily (Amorphophallus bulbifer), female flowers fluroescing in UV light, male flowers above. Native to Yunnan, China.

Heather Angel / Love-in-a-mist (Nigella damascena) stamens fluroescing in UV light. Ring of nectaries are dark red with blue UV reflective hairs.

Heather Angel / Arabian star flower (Ornithogalum arabicum) in UV light with exposed nectar fluorescing yellow. Native to Northern Africa and Southern Europe. Series 1/2.

Heather Angel / Flannel bush (Fremontodendron 'California Glory') exposed and overflowing nectaries fluorescuing in UV light. Native to southwest USA.

Heather Angel / Goat willow (Salix caprea) female catkin in UV light, fine hairs and nectar fluroescing. Surrey, England, UK. Focus stacked.

Heather Angel / Darwin's slipper flower (Calceolaria uniflora) in UV light. Stamens and fleshy lip that provides food reward for polliator Least seedsnipe (Thinocorus rumicivorus) fluorescing. Native to Tierra de...

Heather Angel / Geraldton wax flower (Chamelaucium uncinatum), nectar fluorescing in UV light. Western Australia. Controlled conditions, focus stacked. Series 1/2.

Heather Angel / Christmas rose (Helleborus niger) flower, pollen on dehisced anthers and on petals fluorescing in UV light. Nectar ring appearing red. Focus stacked.

Heather Angel / Large-flowered evening primrose (Oenothera glazioviana). Bull's eye in centre of flower fluorescing in UV light guides pollinators to nectaries. At night in garden. Surrey, England, UK.

Heather Angel / Winter aconite (Eranthis hymenalis) in UV light, pollen on outer stamens that have dehisced fluorescing. Focus stacked.

Heather Angel / Common rue (Ruta graveolens) flower in UV light, pollen and nectar at base of petals fluorescing. Insect pollinators are able to see position of rewards on offer. Surrey, England, UK. Native to Balkan...

Heather Angel / Tulip tree (Liriodendron tulipifera) flower, pollen and nectar fluorescing in UV light. Surrey, England, UK. Native to USA. Focus stacked. Sequence 2/2.

Heather Angel / Two-coloured pineapple lily (Eucomis bicolor), nectar reservoirs fluorescing in UV light. Cultivated in garden, Surrey, England, UK. Native to South Africa. Focus stacked. Sequence 2/2.

Heather Angel / Porcelain orchid (Chloraea magellanica) with osmophores on lip fluorescing in UV light. Chile. Controlled conditions, focus stacked. Sequence 2/2.

Heather Angel / Foxglove (Digitalis purpurea), blue nectar guides and anthers, pollen and stigma fluorescing in UV light. Focus stacked.

Heather Angel / Seville orange (Citrus × aurantium) flower fluorescing in UV light, colour attractive to pollinators. Cultivated in glasshouse, Surrey, England, UK. Focus stacked. Sequence 2/2.

Heather Angel / Alexander's rhubarb (Rheum alexandrae) and Dwarf purple rhododendron (Rhododendron impeditum) in wet valley. Large bracts on rhubarb protect tiny flowers from UV rays. Near Lake Kangding Xian Cuo,...

Heather Angel / Alexander's rhubarb (Rheum alexandrae) and Dwarf purple rhododendron (Rhododendron impeditum) in wet valley with low cloud. Large bracts on rhubarb protect tiny flowers from UV light. Near Lake Ka...

Adrian Davies / Woman with sunscreen applied to one side of face, portrait under UV light. 2016. Model released.

Adrian Davies / Moths (Lepidoptera) attracted to UV night left on overnight. Costa Rica.

Jurgen Freund / Timelapse of a Scolymia coral (Mussidae) feeding, lit with a UV light, Cairns, North Queensland, Australia.

Alex Hyde / Harvestman (Opiliones) fluorescing under ultraviolet light at night. Cloud forest, Manu Biosphere Reserve, Peru. November.

Adrian Davies / Longhorn grasshopper (Deispona sp) Mt Kinabalu, Sabah, Borneo. See 1597583 for comparison with UV light.

Adrian Davies / Longhorn grasshopper (Deispona sp) at night lit by UV light. Mt Kinabalu, Sabah, Borneo. See 1597584 for comparison without UV light.

Emanuele Biggi / Scorption (Parabuthus granulatus) under UV light, Namibia.

Emanuele Biggi / Palmated gecko (Pachydactylus rangei) with fluorescent body areas when illuminated by UV torch, Namibia

Emanuele Biggi / Palmated gecko (Pachydactylus rangei) with fluorescent body areas when illuminated by UV torch, Namibia

Ashley Cooper / Thermometer taking the air temperature as part of a study to measure the speed of the Russell Glacier near Kangerlussuaq, Greenland.

Nick Garbutt / Borneo giant forest scorpion (Heterometrus longimanus) resting inside a fallen hollow log. Danum Valley, Sabah, Borneo. Photographed with natural light and then illuminated with UV light.

Nick Garbutt / Borneo giant forest scorpion (Heterometrus longimanus) resting inside a fallen hollow log. Danum Valley, Sabah, Borneo. Photographed with natural light and UV light, see 1588717 for a comparative imag...