Pharaoh cuttlefish they can show a mottled white and brown color, with a center circle of brown. The mechanism for color is the same in the Pharaoh cuttlefish as it is in other cuttlefish. This colour-changing function is produced by groups of red, yellow, brown, and black pigmented chromatophores above a layer of reflective blue and green tinted iridophores and leucophores, with up to 200 of these specialized pigment cells per square millimeter. These sacs of color are controlled by rings of muscle around the sac. The cuttlefish expands and contracts these muscle rings in order to show different colors. It is
Faculty of Political Science, Chulalongkorn University Centre (TPRC). The Faculty has also run a prominent academic journal namely Journal of Social Science for over 35 years. The published articles are both written in Thai and English. The black singha is used as a symbol of the dedicated leader. The black colour symbolises the colour of the neck of Shiva who drinks the poison churned up from the world ocean (Halahala) to protect and save all creatures. (In fact, the actual colour of Shiva's neck in Hindu mythology is deeply dark blue or "nila". That's why one of his names is Nilakantha or "having a blue-coloured neck".