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
Type 99 (camouflage) American M81 Woodland camouflage, in the sense it utilizes a macropattern of four colours for concealment, printed in interlocking, elongated and branching blobs. Type 99 uses a yellowish-green colour for its fourth colour, as opposed to the US pattern's khaki. Currently, Type 99 remains the standard utility and field uniform of the PLA. Currently, the Type 87 Combat & Training Uniform is being replaced by the new Type 07 Combat & Training Uniform. Type 99 (camouflage) Type 99 is a camouflage pattern used by People's Liberation Army of the People's Republic of China. Type 99 has developed many variants throughout