Claudio Contreras / Californian sea lion (Zalophus californianus) swimming in Southern sea palm (Eisenia arborea) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphe...

Konrad Wothe / Firefly (Lamprohiza splendidula) light tracks in forest, Bavaria, Germany

Yashpal Rathore / Composite image of Fireflies synchronize display just after first shower of monsoon, on moonless night. India.

Juergen Freund / Timelapse of Fireflies (Lampyridae) flying around a tree, Bicol, Philippines.

Juergen Freund / Timelapse of Fireflies (Lampyridae) flying around a tree, Bicol, Philippines.

Tony Wu / Fireflies (Luciola parvula himebotaru) flashing at night for courtship and reproduction. Gifu, Japan. Composite image

Sue Daly / Feather duster fan worm (Sabella spallanzanii) with tentacles moving in the current, Sark, British Channel Islands, UK, August.

Ingo Arndt / Hedgehog eating earthworm {Erinaceus europaeus} Germany

Claudio Contreras / Social feather duster worm (Bispira brunnea) Cancun national Park, Caribbean Sea, Mexico, July

Aflo / Firefly (Lampyridae) Japan.

Paul Hobson / Glowworm (Lampyris noctiluca) at night, Cambridgeshire, England, UK, August.

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