Active camouflage the surface, so when marine animals are seen from below, they appear darker than the background. Some species of cephalopod, such as the eye-flash squid and the firefly squid, produce light in photophores on their undersides to match the background. Bioluminescence is common among marine animals, so counterillumination may be widespread, though light has other functions, including attracting prey and signalling. Color change permits camouflage against different backgrounds. Many cephalopods including octopuses, cuttlefish, and squids, and some terrestrial amphibians and reptiles including chameleons and anoles can rapidly change color and pattern, though the major reasons for this include signalling, not
T99 (camouflage) T99 (camouflage) T/99 is the designation of the camouflage pattern of the Danish Armed Forces desert combat uniform. It is a 3 colour camouflage pattern, similar in design to the Danish M/84 pattern. It is considered to be the desert counterpart of M/84, and consists of different colors better suited for arid climates. The uniform contains splotches of earthy red and dark green on a sand-coloured background. The first version of T/99 was trialled in 1999 and issued in 2000 to Danish personnel attached to the Standby High-Readiness Brigade for United Nations Operations. These service personnel were dispatched to Africa