Alex Mustard / 2020VISION / Light-bulb sea squirts (Clavelina lepadiformis), a colonial filter feeding invertebrate, fluoresce orange when photographed under deep blue light. Shetland Islands, Scotland, UK, June. Did you know? L...

Alex Mustard / 2020VISION / Pair of Skeleton shrimps (Caprella linearis) male on left, living on lightbulb tunicates. Bard Cave, Bressay, Shetland Islands, Scotland, UK, June

Philippe Clement / Wind farm turbine against cloudy sky seen inside incandescent lamp / bulb against black background Digital composite

Philippe Clement / Sunflowers (Helianthus annuus) inside incandescent lamp / bulb against white background Digital composite

Philippe Clement / Lightning during thunderstorm above petrochemical industry inside incandescent lamp / bulb against black background. Digital composite

Sue Daly / Lightbulb seasquirts / tunicates (Clavelina lepadiformis) cluster on rock, Channel Isles, UK, July

SCOTLAND: The Big Picture / Curled octopus (Eledone cirrhosa) amongst a mearl bed, with Lightbulb tunicates (Clavelina lepadiformis) Shetland, Scotland, UK, August.

Staffan Widstrand / Wild Wonders of China / Striated swallow (Cecropis striolata) breeding on top of a modern lightbulb, Tangjiahe National Nature Reserve, Qingchuan County, Sichuan province, China

Sue Daly / Lightbulb sea squirt (Clavelina lepadiformis) Trondheimsfjord, Norway, July.

Tom Gilks / Water filled bottle fixed into a tin roof, dispersing sunlight and acting as a natural lightbulb. Kenya. April 2013.

Jeff Rotman / Cannabis plants growing under artificial light, in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. . Marijuana has been legalized in the state of Colorado, and this farm produces Marijuana...

Staffan Widstrand / Wild Wonders of China / Striated swallow (Cecropis striolata) nest on top of a modern lightbulb, Tangjiahe National Nature Reserve, Sichuan province, China. April.

Bert Willaert / Lizard (Proctoporus sp) Andes, taken against white background, Bolivia.

Bert Willaert / Lizard (Proctoporus sp) Andes, taken against white background, Bolivia.

Enrique Lopez-Tapia / Animal relief sculptures on mud of house wall, in indigenous Tharu village, Terai, Bardia National Park, October 2011.

Enrique Lopez-Tapia / Ants preying on beetle; these ants wait on light bulb to catch insects attracted to the light, Royal Chitwan National Park, Nepal.

Enrique Lopez-Tapia / Ants preying on beetle; these ants wait on light bulb to catch insects attracted to the light, Royal Chitwan National Park, Nepal.

Enrique Lopez-Tapia / Ants preying on beetle; these ants wait on light bulb to catch insects attracted to the light, Royal Chitwan National Park, Nepal.

Sue Daly / Lightbulb seasquirts / tunicates (Clavelina lepadiformis) cluster on rock, Channel Isles, UK, July

Pete Oxford / Andes Lizard (Riama unicolor) lives at over 2800m, Ecuador, captive

Konrad Wothe / Tropical Lightbulb Lizard (Andinosaura oculata), northern Ecuador

Christian Ziegler / Termites swarming around lightbulb at night in village, Kokolopori Bonobo Reserve, Democratic Republic of the Congo

Milan Radisics / Female Red fox (Vulpes vulpes) observing the yard from the top of the old stone wall, trying to determine whether it is safe to enter, Hungary, January.

Edwin Giesbers / Researcher using pooter to collect insects during trapping session, insects attracted by light to white sheet. Long-term monitoring has revealed a 50% decline in moths over 25 years. De Kaaistoep Natu...

Edwin Giesbers / Researcher using pooter to collect insects attracted by light to white sheet during trapping session, another researcher waiting at desk in background to identify and record insects. Long-term monitor...

Edwin Giesbers / Researcher using pooter to collect insects during trapping session, insects attracted by light to white sheet. Long-term monitoring has revealed a 50% decrease in moth numbers in 25 years. De Kaaistoe...

Nigel Cattlin / Close up of Oriental poppy flower (Papaver orientalis), dark anthers, stamens, filaments, ovary, stigma against red petals , Devon, England, UK. June.