The octopus is a very intelligent animal, possibly smarter than any other mollusk. Octopus can manipulate objects, solve math problems, and communicate with other species, leading some researchers to believe they are from aliens.
There are around 300 species of octopus discovered by scientists in the vast ocean world. And this invertebrate animal also contains a lot of interesting things that amaze scientists.
1. Octopod belongs to the order Octopoda, has a soft body structure similar to that of the squid. The body structure of the octopus is boneless, does not have a hard outer shell, so this animal can easily squeeze through the small rock crevices under the ocean. The only material of the octopus is in the shape of a parrot, located under the head, between the 8 arms.
2. An octopus looks like a dome or an upside-down bowl on a big pile of ink barbs. But in fact, what we still call the head of the octopus is its body, inside which contains all the important internal organs including 3 hearts, 2 hearts pumping blood for the gills. And 1 heart will pump blood through the body.
3. The blood of the octopus is light green.
4. The sight of octopuses is very good, but unfortunately they are deaf.
5. Of all marine life, the octopus is considered the most intelligent animal. Their nervous system is quite complex, more than two thirds of neurons are found in the nerves of the tendons. Octopus tendons have complex reflexes with control of at least three levels of the nervous system.
6. The tentacles on the octopus acorns have a suction effect so that the octopus can hold its prey while these tentacles also help the octopus determine the terrain and shape of the things it attaches to. .
7. Octopus hands can grow back when lost.
8. Octopus species often prefer to flee rather than turn around to fight their enemies, they often accumulate water in their bodies and shoot at extremely fast speeds to form a jet to push their whole body forward. find a way to flee from the enemy. Their speed is around 25 km / h.
9. Scientists have discovered that the octopus has the ability to remember both short and long term. They can distinguish shapes, imitate all the actions of objects after observation. The ability to escape from octopuses should be called the master because they are extremely intelligent. Some fishermen have been unable to detect octopus sneaking into their boat to eat well and disappear at any moment.
10. However, the lifespan of octopus is very short, usually around 2 years, but some species only live for 6 months. Only the giant Pacific octopus can extend its lifespan up to 5 years if it lives in the ideal environment.
11. Scientists believe that the life of an octopus is similar to that of a salmon. They cannot live long after mating. Males usually die a few months after introducing their semen sac into the female. Females live longer to protect their eggs.
Interestingly, octopuses have a rather special mating mechanism. The male creates a semen capsule and is inserted into the female’s body through a pipe. When it sinks deep into the female, this nozzle begins to swell, easily and completely releases its sperm, capable of eliminating the future children of the previous opponent.
12. Like the chameleon, the octopus has the ability to change the color of the body to adapt to the surrounding environment to be able to perfectly escape enemies. Additionally, the octopus can spray ink on enemies when in danger. The black ink prevented these attackers from seeing the octopus and they easily escaped.
13. The Lepidoptera is a nocturnal animal and its favorite food is crab, mollusks and crayfish.
14. Females can lay up to 150,000 eggs in two weeks. Females do not feed but focus on protecting their eggs. This causes the baby octopus to lose its mother after birth because its mother dies from lack of nutrients and starvation for a long time.
15. A newborn octopus the size of a flea.
16. The blue-spotted octopus is one of the most poisonous marine animals in the world: it can kill you after a bite.
17. Octopus moves by crawling or swimming. But their main movement is that of cows.
