Octopus is a group of cephalopods known to have high intelligence.
Octopus can camouflage imitate the surrounding environment to avoid the target of predators.
How to move the animal is also unique, that is by spraying water, like how the jet engine works.
Here's another fact about the octopus that you should know.
- There are two groups of octopus.
In nature, there are about 300 species of octopus (Octopoda). The species is divided into two groups, namely Cirrina and Incirrina.
Cirrina (also known as a finned deep-sea octopus) has two fins in the head and a small internal shell.
Octopuses in this group also have small cirri or filaments such as cilia on the arm that may play a role in the process of eating.
Another group, the incubinae of octoprines (benthic and argonaut octopus) includes many widely known species of octopus.
- Octopus has arms, not tentacles.
A common mistake is to think of the octopus arm as a tentacle.
The tentacles are generally longer than arms and have only suckers at the ends.
On the other hand, the octopus arm has a sucker almost along the arm.
- Octopus spray ink as a way of self-defense.
Most octopus species can release the thick black ink that confuses predators and gives the octopus a chance to escape.
One of the pigments in octopus ink is melanin (a pigment that is also present in the skin and human hair).
- Special skin cells called chromatophores allow octopuses to camouflage by imitating the surrounding environment.
Chromatophores allow the octopus to disguise itself so that it is difficult to distinguish from its surroundings by changing the appearance of the epidermis.
- In English, there are three plural forms of octopus (octopus).
The plural form of octopus is octopus, optopuses, and octopodes.
- Octopus is included in the category of cephalopoda.
Cephalopoda is a class of molluscs that includes squid, cuttlefish, nautilus, and octopus.
Cephalopods are characterized by bilaterally symmetrical bodies, have heads, arms, and in some cases, tentacles.
- Octopus has three hearts.
Two hearts are used to pump blood into each lung, while one other heart is used to pump blood throughout the body.
- Octopus has a short life span.
The life span of octopus varies between species and ranges from six months to five years.
- Octopus is known as a smart animal.
Octopus is believed to be the most intelligent invertebrate animals that have problem-solving ability (not just rely on instinct).
- Octopus can enter a small gap.
Because it has no internal or external bones or shells, the octopus is able to manipulate the body to enter a narrow gap.
- Octopus moves by crawling or using jet propulsion.
Octopus is one of the few animals capable of moving by means of jet propulsion.
How to move jet propulsion is done by contracting the mantle to push the water out so as to make the octopus move forward.
Because jet propulsion takes a lot of energy, octopuses are also often crawling to save energy.
