Octopus is a creature that lives in the sea, and they are also a very intelligent animal. When studying them, researchers have found that octopuses have many ways to protect themselves when they are in danger. For example, octopuses change color and camouflage themselves by changing their color to the same color as their surroundings. In addition, octopus will also spray ink, which is also a measure to protect themselves.
When studying octopus inkjet behavior, some researchers originally thought that the ink was used to block the enemy's line of sight, which is what we can easily think of. But this is not the case, in fact, fish vision is not good, octopus inkjet is not the main purpose of the enemy's line of sight. On the contrary, fish and other marine organisms have a keen sense of smell and hearing, which are the main senses they use when hunting. Therefore, the main purpose of octopus inkjet is to paralyze the enemy's sense of smell, thereby protecting themselves.
The above has been introduced, octopus in the face of danger will spray ink. Octopuses have a special body structure, one of which is an ink sac, which can store a lot of ink. When in danger, the octopus will actively shrink the ink sac and eject ink, just like squeezing a balloon. Octopuses can spray ink several times to darken the surrounding water so they can escape or find other cover. Generally speaking, this kind of ink is non-toxic, because water is the main component, and it also contains some black substances. Although it contains a little poison to paralyze prey, it has little effect on humans. Ink is also edible, and these trace toxins are not harmful after cooking.
