Fish and other aquatic creatures

Jellyfish Cyanea - a giant arctic with a lion's mane

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Hairy Cyanea is the largest jellyfish in the world. This is a real giant of the seas and oceans. Its full name is Cuanea arctica, which translates from Latin as “Arctic jellyfish jellyfish”. This beautifully glowing pink-purple creature can be found in the high latitudes of the northern hemisphere of the Earth: jellyfish are common in all the northern seas, flowing into the Pacific and Atlantic oceans. You can see it directly near the coast, in the upper layers of water. Researchers who studied the hairy cyanea, initially searched for it in the Azov and Black seas, but never found it.

Medusa of Cyanea. Impressive size

According to the latest oceanographic research, which leads members of the expedition of the so-called Cousteau team, the diameter of the gelatinous “body” (or dome) of cyanea can reach 2.5 m. But this is what! The pride of the hairy arctic jellyfish is its tentacles. The length of these shoots varies from 26 to 42 m! Scientists have concluded that the size of these jellyfish is entirely dependent on the conditions of their habitat. According to statistics, it is individuals that inhabit the coldest oceanic waters that are of enormous size.

External structure

Cyanean hairy jellyfish has a rather varied color of its body. It is dominated by brown, purple and red tones. When a jellyfish becomes an adult, its dome (“body”) from above begins to turn yellow distinctly, and its edges turn red. The tentacles, located at the edges of the dome, have a violet-pink hue, and the oral lobes are red-crimson. It is because of the long tentacles that they are called cyanea and are called hairy (or hairy) jellyfish. The dome itself, or bell, of the arctic cyanea has a hemispherical structure. Its edges smoothly turn into 16 blades, which, in turn, are separated from each other by specific cuts.

Lifestyle

These creatures spend the lion's share of their numerous time in the so-called free swimming - they hover on the surfaces of the sea waters, periodically reducing their gelatinous dome and waving their extreme blades. Hairy Cyanea - is a predator, and very active. It feeds on plankton, swimming in the surface layers of water, crustaceans and small fish. In the particularly “hungry years,” when there is literally nothing to eat, the Cyaneans can go hungry for a long time. But in some cases, these creatures become cannibals, devouring their own relatives.

Members of the Cousteau team describe in their research a way of hunting that uses a jellyfish. Hairy Cyanea rises to the surface of the water, straightening its long tentacles in different directions. She is waiting for her victim. Researchers have noticed that in such a state, cyaneus very much resembles algae. It is worth the victim closer to swim to such "algae" and touch them, as the jellyfish immediately wraps around their prey, releasing into it with the help of so-called stinging cells a poison that can paralyze. As soon as the prey stops giving signs of life, the jellyfish eats it. The poison of this gelatinous giant is strong enough and is produced along the entire length of the tentacles.

Breeding

This creation reproduces in a very unusual way. The male throws his spermatozoa through the mouth through the mouth of the female. Actually, that's all. It is in the mouth of the female jellyfish that embryos are formed. When the "kids" grow up, they will come out in the form of larvae. These larvae, in turn, will attach to the substrate, turning into a single polyp. After a few months, the grown-up polyp will begin to multiply, after which the larvae of future jellyfish will appear.

Interesting Facts

Until now, the largest captured Arctic Cyan, officially registered in the documents, is a creation that was thrown out in 1870 on the coast of the Gulf in the US state of Massachusetts. The diameter of this giant's dome was 2.3 m, and the length of the tentacles was 36.5 m. At present, scientists are known for certain about the existence of specimens with a gelatinous body diameter of up to 2.5 m and a length of 42 m of the tentacles. scientific underwater bathyscaphe within the framework of oceanographic expeditions, however, no one has managed to catch at least one such specimen so far.

The cyanus jellyfish is known among divers for its painful burn. Officially, the world's largest jellyfish is considered dangerous to humans. But in fact, only one death was recorded. As a rule, such a burn leaves a local redness on the skin of a person, which disappears for some time. Sometimes rashes appear on the body, accompanied by painful sensations. And all because the poison giant contains toxins that can cause an allergic reaction. However, if you are stung by a giant cyanus jellyfish, it is recommended to consult a doctor.

Want to know everything

You probably often met this photo on the Internet with the signature MOST BIGGEST MEDUSA IN THE WORLD. Moreover, almost everywhere they write that this is the Arctic Cyanea, also known as Cyanea hairy or lion's mane (Latin Cyanea capillata, Cyanea arctica). The length of the tentacles of these jellyfish can reach 37 meters.

But surely many of you had doubts whether the jellyfish are really so huge!

In general, the title photo from the series is about this:

or for example:

By the way, we exposed this huge toad right here - Expose! Why such a huge toad?

So what is really in the photo? You may be surprised, but in the photo is a real Arctic Cyanea. And she really is the biggest jellyfish in the world. True, the diameter of the dome it reaches a maximum of 2 meters and it looks like this:

The largest jellyfish reached 36.5 meters, and the diameter of the "cap" was 2.3 meters.

There is a difference, is not it? Let's learn a little more about this jellyfish.

Photo 1.

Cyanos from Latin is translated as blue, and capillus - hair or capillary, i.e. literally - blue-haired jellyfish. This is a representative of scyphoid jellyfish diskomeduz squad. Cyanea exists in several forms. Their number is a subject of controversy between scientists; nevertheless, at present, two more of its varieties are distinguished - blue (or blue) cyanea (suapea lamarckii) and japanese cyanea (suapea capillata nozakii). These relatives of the giant "lion's mane" are much smaller than it.

Photo 2.

Giant Cyan is a resident of cold and moderately cold waters. It is also found off the coast of Australia, but is most numerous in the northern seas of the Atlantic and Pacific Ocean, as well as in the open waters of the Arctic seas. It is here, in northern latitudes, that it reaches record sizes. In the warm seas, Cyania does not survive, and if it penetrates into milder climatic zones, it does not grow more than half a meter in diameter.

In 1865, the sea threw a huge jellyfish to the coast of the Massachusetts Bay (the North Atlantic coast of the USA), the diameter of the dome was 2.29 meters and the length of the tentacles reached 37 meters. This is the largest of the giant cyanoid specimens, the measurement of which is documented.

Photo 3.

The body of Cyanea has a variety of colors, with a predominance of red and brown tones. In adult specimens, the upper part of the dome is yellowish, and its edges are red. Oral lobes crimson-red, marginal tentacles bright, pink and purple hues. Young individuals are colored much brighter.

Cyania has a lot of extremely sticky tentacles. All of them are grouped into 8 groups. Each group contains within 65-150 tentacles located in a row. The dome of the jellyfish is also divided into 8 parts, giving it the appearance of an eight-pointed star.

Photo 4.

Jellyfish Cyanea capillata is both male and female. During fertilization, the male cyaneans release mature sperm into the water through their mouths, from where they penetrate into brood chambers located in the oral lobes of the females, where the fertilization of eggs takes place and their development. Next, the planula larvae leave the brood chambers and swim for several days in the water column. Having attached to the substrate, the larva is transformed into a single polyp — a scyphous one, which actively feeds, grows in size, and can reproduce in a sexless way, budding itself from its children as a scifist. In the spring, the process of transverse division of a scyphoshtome begins - strobillation and the larvae of jellyfish ethers are formed. They look like transparent stars with eight rays, they do not have marginal tentacles and oral lobes. Esters break away from the scyphomas and swim away, and by the middle of summer they gradually turn into jellyfish.

Photo 5.
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Most of the time, cyanias hover in the near-surface layer of water, periodically shrinking the dome and waving edge blades. The tentacles of the jellyfish are straightened and extended to their full length, forming a dense fishing net under the dome. Cyaneans are predators. Long, numerous tentacles densely seated stinging cells. When they are shot, a strong poison penetrates the victim's body, killing small animals and causing significant damage to larger ones. Extraction of cyanias is a variety of plankton organisms, including other jellyfish, and small fish, which adhere to tentacles, can also be caught.

The Arctic Cyanea is poisonous for humans, but its poison does not have such power to lead to death, although there is only one death case from the poison of this jellyfish in the world. It may cause an allergic reaction and may cause a skin rash. And in the place where the tentacles of the jellyfish touch the skin, a person can get burned and later redness of the skin, which passes with time.

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How diverse and interesting can be jellyfish! Their shape can be similar to lanterns, chandeliers, saucers, and umbrellas with tentacles, all of which are translucent, ephemeral, colored with pastel blue, purple, brown, and pink.

Jellyfish are class intestinalwho catch and paralyze their prey with the help of tentacles. The body of jellyfish largely consists of watered connective tissue - mesogloies - and in form resembles a bell or an umbrella. Such a structure allows the jellyfish to move by muscle contraction. Body jellyfish on 98 % consists of water. But most of all jellyfish have interesting so-called stinging cells. They are a capsule filled with poison. Inside the cage there is a spiral long hollow thread, and outside the sensitive hair sticks out. When the victim touches him, the thread is twisted out of the capsule and pierced into the victim, and poison is injected through the thread.

An interesting representative of the type of jellyfish, which is listed in the Guinness Book is called cyaneus hairyfound in the northwestern Atlantic in 1865. The size of her hat was 2,28 meters, and the tentacles reached 36,5 meters And if you stretch these tentacles in opposite directions, then the total length of the jellyfish will be equal to 75 meters!

These jellyfish live in the seas, oceans, rarely approaching the coast, swimming along currents and at a depth of no more than 20 meters. The tentacles of jellyfish are straightened and extended to the full length, forming a dense network under the body. Cyaneans are predatory animals. Their prey is a variety of plankton organisms, including other jellyfish.

Arctic Cyanea is actually not as dangerous as it may seem at first glance. Its sting is not capable of causing a person to die, but a rash can be quite unpleasant, and toxins in the venom can trigger an allergy.

How diverse and interesting can be jellyfish! Their shape can be similar to lanterns, chandeliers, saucers, and umbrellas with tentacles, all of which are translucent, ephemeral, colored with pastel blue, purple, brown, and pink.

Jellyfish are class intestinalwho catch and paralyze their prey with the help of tentacles. The body of jellyfish largely consists of watered connective tissue - mesogloies - and in form resembles a bell or an umbrella. Such a structure allows the jellyfish to move by muscle contraction. Body jellyfish on 98 % consists of water. But most of all jellyfish have interesting so-called stinging cells. They are a capsule filled with poison. Inside the cage there is a spiral long hollow thread, and outside the sensitive hair sticks out. When the victim touches him, the thread is twisted out of the capsule and pierced into the victim, and poison is injected through the thread.

An interesting representative of the type of jellyfish, which is listed in the Guinness Book is called cyaneus hairyfound in the northwestern Atlantic in 1865. The size of her hat was 2,28 meters, and the tentacles reached 36,5 meters And if you stretch these tentacles in opposite directions, then the total length of the jellyfish will be equal to 75 meters!

These jellyfish live in the seas, oceans, rarely approaching the coast, swimming along currents and at a depth of no more than 20 meters. The tentacles of jellyfish are straightened and extended to the full length, forming a dense network under the body. Cyaneans are predatory animals. Their prey is a variety of plankton organisms, including other jellyfish.

Arctic Cyanea is actually not as dangerous as it may seem at first glance. Its sting is not capable of causing a person to die, but a rash can be quite unpleasant, and toxins in the venom can trigger an allergy.
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