Interesting facts about octopuses


Posted on May 4, 2022      32


Amazing marine animals octopuses are still poorly studied. For modern scientists, it was a surprise that they have a very developed intelligence, and perhaps we still do not know how much. At least, experiments are still going on, and there is every chance that we can learn many more interesting facts about octopuses soon. Unless, of course, humanity pollutes the world’s oceans so much that all life there will start dying out.

Facts about octopuses

  • Most species of these animals live only at considerable depths, inaccessible to humans. Therefore, they are so difficult to study.
  • Many octopus species are talented imitators. They not only change the color of their skin, masquerading as their surroundings, but also imitate the behavior of other animals, more dangerous.
  • The octopus’s pupil is unique in its shape - it is neither round nor vertical, but rectangular.
  • All octopuses have not one heart, but the whole three. Two of them are auxiliary. They help pump water through the gills.
  • Most octopus species have a brain volume comparable to the volume of the rest of the body. As a percentage, it is greater than almost any other living creature.

  • If an octopus goes blind, it loses the ability to change its body coloration. And an octopus blind in one eye will only be able to change color in half of its body.
  • All species of octopus in terms of biology belong to the cephalopod mollusks.
  • The largest species is the octopus Enteroctopus dofleini, aka giant octopus. Its length, together with its tentacles, can reach 9 meters, and its weight - over 250-260 kg. However, this is rather an exception. On average, large octopuses weigh up to 50 kg. Quite a small species also suffice.
  • Frightened octopus pale and furious - red.
  • In their throat, they have poison glands that secrete venom, which helps them in the hunt.
  • The octopus’s beak is as real as a bird’s. In platypuses, for example, it is quite different, comprising a skin stretched on the U-shaped bone.
  • Octopuses can also move on land, but slowly and clumsily.
  • Many of their species, fleeing, throwing a jet of ink in the enemy's direction, to blind him and get away, taking advantage of his confusion.
  • If an octopus loses a tentacle, it will regrow it later. Sometimes, they sacrifice limbs to distract the enemy and escape.
  • Because their body is very flexible and almost amorphous, like a sack of water, octopuses can penetrate even into the narrowest crevices.

  • Zoopsychologists claim octopuses are the most intellectually developed of all invertebrate animals.
  • The beak of the octopus is very similar to that of a parrot.
  • The only solid part of this animal’s case is its aforementioned beak. But it has no skeleton at all.
  • In their shelter octopuses always keep clean. They clean the trash with a stream of water.
  • Small blue-ringed octopuses are some of the most poisonous living creatures on our planet. Their venom is always deadly, and there is still no antidote for it.
  • The blood of an octopus is not red, but blue. The red color of our blood is given by the iron in it, but in these animals it is performed by copper.
  • Each tentacle of an octopus has about 10,000 receptors.
  • Scientists have frequently observed octopuses eating their own tentacles because of some strange disease. Why this happens is still unclear.
  • In the U.S. in the sixties of the last century was popular strange fun - octopus wrestling. The diver had to wrestle this animal in the water and drag it to dry land.
  • Sometimes octopuses carry with them the shell of a coconut, hiding in it in case of danger, like a turtle in the shell.
  • In their own unique are the so-called hovering octopuses, in which females are thousands of times larger than males. An adult female can reach a length of 2-2.5 meters, while the male usually grows to only 2-2.5 centimeters.
  • Despite the lack of ears, octopuses hear the usual sounds. Infrasound is also perceived by them.

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