乌贼,又叫墨(mo)鱼。它的足生在头上,这是动物界绝无仅有的。乌贼共有10只足,其中8只短足,另有两只特别长的捕捉食物的足,叫捉足。乌贼的背皮上有黄、黑、橙黄色等色素细胞,这些色素细胞能放大或缩小,在神经系统的支配下,它能随心所欲地把身体的颜色变得和周围的环境一模一样。就是靠着这个本事,乌贼在危急时刻摇身一变,使近在咫(zhi)尺的“敌人”也没法辨其所在。乌贼不仅善于变色,而且还有一招施放“烟幕弹”的撒手锏(jian)。原来,在它的体内长有一个墨囊(nang),里面贮满了乌黑的“墨汁”。每当它突遇强敌,无法逃脱时,就立刻喷出一股浓墨,把周围的海水染成一 Squid, also known as ink (mo) fish. Its full of life in the head, this is the unique animal kingdom. A total of 10 cuttlefish, of which 8 short legs, while the other two special long enough to capture food, called catch enough. Squid on the back of the skin with yellow, black, orange and other yellow pigment cells, these pigment cells can zoom in or out, under the control of the nervous system, it can arbitrarily make the body’s color and the surrounding environment become exactly the same. It is by this skill, squid transformed in times of crisis, so close to the “enemy” can not tell where they are. Squid is not only good at discoloration, but also cast a cast of “smoke bomb” (jian). It turned out that in its body, there is a long nang, which is full of dark “ink ”. Whenever it encounters a strong enemy, can not escape, it immediately emit a thick ink, the surrounding sea water dyed