Four kinds of giant squid.

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According to the data of the Global Information Network of the Institute of Fisheries Experiment of the Agricultural Committee of the Executive Yuan, there are 685 species of Cephalopods)*** in 43 families 149 genera, of which squid is the majority, accounting for 200 ~ 230 species in 23 families.

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2. Humboldt squid are used to hunting in groups, and the number is more than 1000. They quickly change their body's? Color, communicate with your peers. Scientists believe that Humboldt squid is intelligent and has complex relationships.

Flow mode.

Fig. 9. Humboldt Squid is spraying ink.

Image source: http://ocean.si.edu/climate-change

3. Every tentacles of Humboldt squid is covered with chitin suckers, which can easily draw the prey closer to the beak. All the contact wrists are used when hunting. Usually, 10 will form a cone to approach the target quickly. When the distance reaches the attack range, they will open eight contact wrists to form a surrounding net for the target, and the remaining two contact wrists with chitin suction cups will continue to stretch. When the extended two touching wrists catch the prey, they quickly pull it back into the beak.

4. Humboldt squid, like King squid, has three hearts and blue blood with hemocyanin in its blood cells. One way of communication is to use their luminous organs located on the skin.

5. During the day, you can dive to11,000 meters for food; At night, it is located on the sea surface, and it is a verticalmigration animal.