Bruno D'Amicis / Fireflies (Luciola sp.) males displaying at dusk over a wheat field. Abruzzo, Italy.

Alex Hyde / Golfo dulce / Many-scaled anole (Norops / Anolis polylepis) male signals to other members of its species by flashing a section of brightly coloured skin on its neck, known as a dewlap, endemic to the...

Alex Hyde / Golfo dulce / Many-scaled anole (Norops / Anolis polylepis) male signals to other members of its species by flashing a section of brightly coloured skin on its neck, known as a dewlap, endemic to the...

Alex Hyde / Golfo dulce / Many-scaled anole (Norops / Anolis polylepis) male signals to other members of its species by flashing a section of brightly coloured skin on its neck, known as a dewlap, endemic to the...

Constantinos Petrinos / Blue-ringed octopus (Hapalochlaena lunulata) flashing its blue rings, whilst swimming over sand, Lembeh Strait, Molucca Sea Sulawesi, Indonesia, February.

Constantinos Petrinos / Blue-ringed octopus (Hapalochlaena lunulata) swimming just above the seabed while flashing (pulsating) its blue rings. Lembeh Strait, Molucca Sea Sulawesi, Indonesia.

Constantinos Petrinos / Blue-Ringed Octopus or Blue Ringed Octopus (Hapalochlaena lunulata) displaying during daytime. This species, when flashing (pulsating) its blue rings, is a classic example of aposematic or warning co...

Constantinos Petrinos / Blue-Ringed Octopus or Blue Ringed Octopus (Hapalochlaena lunulata) displaying while walking over the seabed during daytime. This species, when flashing (pulsating) its blue rings, is a classic exampl...

Constantinos Petrinos / Blue-Ringed Octopus (Hapalochlaena lunulata) jetting away, swimming away while flashing (pulsating) its blue rings. This species, when flashing (pulsating) its blue rings, is a classic example of apos...

Constantinos Petrinos / Blue-Ringed Octopus or Blue Ringed Octopus (Hapalochlaena lunulata) displaying while hunting during daytime. This species, when flashing (pulsating) its blue rings, is a classic example of aposematic...

Yukihiro Fukuda / Light trails of Japanese fireflies (Luciola cruciata) at night, Ichikawa-river, Asago, Hyougo, Japan, July

Yukihiro Fukuda / Light trails of Japanese fireflies (Hotaria parvula and Luciola cruciata), Nichinan-chou, Tottori, Japan, July, Endemic species.