Juergen Freund / Timelapse from day to night of bioluminescent fungi (Omphalotus nidiformis / Pleurotus nidiformis) on a tree trunk, Atherton Tablelands, Queensland, Australia.

Solvin Zankl / Bioluminescent Sea-fireflies (Vargula hilgendorfii) producing a bright blue light. The light is produced by mixing two chemicals together in the presence of oxygen and is for mating displays or defenc...

Mark MacEwen / Japanese firefly (Luciola cruciata) light trails at night above stream in rural Japan. June.

Alex Hyde / Long exposure of light trail from bioluminescent click beetle (Pyrophorus sp) walking on ground at night. Danum Valley Sabah, Borneo.

Juergen Freund / Bioluminescent fungi (Omphalotus nidiformis / Pleurotus nidiformis) glowing on tree trunk in rainforest at night, Atherton Tablelands, Queensland, Australia,

Juergen Freund / Glowing / bioluminescent fungi on rainforest tree, possibly Omphalotus nidiformis, Tableland rainforest, Far North Queensland, Australia

Floris van Breugel / Syncronous Fireflies (Photinus carolinus) illuminate the lush forests of Smoky Mountains National Park, Tennesse, USA, July

Floris van Breugel,Floris van Breugel / Tent at night surrounded by Fireflies (Photinus carolinus) Great Smoky Mountains National Park, Tennessee, USA, June 2013.

Alex Mustard,Alex Mustard / A blue light fluorescence photo of Jewel anemones (Corynactis viridis). The blue light source excites the fluorescent pigments in the anemones, which emit light of other colours. The muddy seabed and...

Nature Production / Japanese firefly (Luciola cruciata) on leaf at night, with light trails of hundreds of other fireflies in flight in the background, Japan

Nature Production / Luminescent Dwarf Squid (Watasenia scintillans) Osezaki, Shizuoka Prefecture, Japan

Martin Dohrn / John Ruthven swimming in the Bioluminescence Bay in Vieques, Puerto Rico. Dinoflagellates create the bioluminescense when disturbed. Model released.