? Cuttlefish, also known as "cuttlefish", is an animal that lives in the ocean. The squid has some ways to protect itself, and some ways to hide itself from the enemy. One of the effective ways is to change color. Squid have the ability to change color, and this ability is so strong that some people call them "chameleons in the ocean".
When squid are in different environments, their body color is also different. When they live in the ordinary environment of the ocean, they usually have some dark stripes on their bodies. Similar to the stripes on a zebra's body. When they are attached to white rocks, their body color will change to white; when they are attached to brown rocks, their body will appear some gray-brown markings; when they are attached to black rocks, their color will change to black. If their environment itself has a lot of color, it will also be reflected in their body color, at this time they are also variegated.
Cuttlefish can change color because of their special body structure, which has many kinds of pigments at the same time, such as black, red, orange, yellow and so on. Among them, the pigment of black is the most, while the pigment of other colors is relatively less. After the squid receives the color information from the outside world, it will transmit them to the nerve center, and then the nerve center will send out signals to regulate the pigment cells. In this way, through the expansion of some pigment cells and the contraction of some pigment cells, the color of squid will change accordingly. In fact, squid change color not only to protect themselves, but sometimes they change color because of emotional changes, and their colors are different in different emotional States.
? Some squid have the ability to glow, but not all of them. Glowing squid generally live in the deep sea, such as some ear squid living in the deep waters of the Atlantic Ocean, which can emit light. There are also some squid with luminous groups, such as fluorescent squid, which emit very bright blue, which is very obvious at night.
