Squid

Masters of camouflage, Squid have special cells just under their skin surface which enable them to blend into their surroundings. One group of these special cells are called ‘Chromatophores’. At the centre of each chromatophore is an elastic sac full of pigment (brown, black, orange, red or yellow). The pigment sac is surrounded by muscles and nerves that expand (contraction) or contract (relaxed) the sac, allowing the skin to display a different colour.

Posted on October 21, 2015 .