The Color-Changing Ability of the Cuttlefish
墨鱼(乌贼) 能 改变 身体 颜色，好 随时伪装自己，让人几乎认不出它们。研究指出，乌贼身上的颜色和图案 不仅千变万化，而且可以在瞬息间转换。他们是怎么办到的?
CUTTLEFISH can change their color and camouflage themselves, becoming almost invisible to the human eye. According to one report, cuttlefish “are known to have a diverse range of body patterns and they can switch between them almost instantaneously.” How do cuttlefish do it?
The cuttlefish changes color by using the chromatophore, a special kind of cell found under its skin. Chromatophores contain sacs that are full of colored pigment and that are surrounded by tiny muscles. When the cuttlefish needs to camouflage itself, its brain sends a signal to contract the muscles around the sacs. Then the sacs and the pigment within them expand, and the cuttlefish quickly changes its color and pattern.
Another article by Sci & News U.S. Marine Biologists Reveal Secrets of Cuttlefish