Alex Mustard / 2020VISION / Group of Jewel anemones (Corynactis viridis) photographed under blue light to show their fluorescence, Plymouth Sound, Devon, UK, July

Ashley Cooper / Technicians fitting solar photo voltaic panels to a house roof in Ambleside, Cumbria, UK. August 2011

Ashley Cooper / Cars driving on the M1 motorway, near Loughborough in evening fog. England, UK, December 2006

John Cancalosi / Calcite(red) and Willemite(green), under flourescent light, Franklin New Jersey.

Juergen Freund / Fluorescent corals (Scolymia australis) Great Barrier Reef, Australia

Alex Mustard / 2020VISION / Three Jewel anemones (Corynactis viridis) photographed under blue light to show fluorescence, Plymouth Sound, Devon, UK, July. Note tiny amphipods living inside the central anemone.

Alex Mustard / 2020VISION / Mouth and tentacles of Jewel anemone (Corynactis viridis) photographed under blue light to show fluorescence, Plymouth Sound, Devon, UK, July, Note tiny amphipods living inside anemone. Did you know?...

Jeff Rotman / Southern pygmy squids (Idiosepius notoides) schooling at night, Sydney, Australia, Pacific

Juergen Freund / Hard coral {Lobophyllia sp} fluorescent under UV light, Papua New Guinea

Roberto Rinaldi / Hard coral (Favia sp) fluorescence at night, captured using an electronic strobe. Compare with image 8118527. Red Sea.

Roberto Rinaldi / Coral (Mycedium sp) fluorescence at night, captured using an electronic strobe, Red Sea.

Roberto Rinaldi / Coral (Favia sp) fluorescence at night, captured using an electronic strobe, Red Sea.