The most interesting facts about jellyfish. Jellyfish: interesting facts, types, structure and features

Many of those who rested at sea, faced with jellyfish. This helped to understand the fact that they can not be called ordinary and harmless creatures. Let's look at some interesting facts about jellyfish.

What is known about the science of jellyfish?

Interesting facts about jellyfish

Researchers believe that jellyfish existabout 650 million years. They are found in all layers of each of the oceans. Different types of jellyfish live in salt and fresh water. Their primitive nervous system, which is located on the epidermis, allows you to perceive only smells and light. Nervous nets of jellyfish help them to detect another organism with the help of a touch. These "animal plant", in fact, do not have a brain and senses. They do not have a developed respiratory system, but breathe through a thin skin that absorbs oxygen directly from the water.

Exploring interesting facts about jellyfish, scientistsnoticed that these creatures can positively influence people who are experiencing stress. For example, in Japan they cultivate jellyfish in special aquariums. Their smooth and measured movements act as a sedative. Although such pleasure is expensive and delivers additional troubles, on the whole it is justified.

Jellyfish more than 90 percent consist of water. The poison of their tentacles is used as a raw material for drugs that regulate blood pressure, and for the treatment of respiratory diseases.

Medusa Portuguese boat: interesting facts and observations

Fisalia jellyfish interesting facts

"Portuguese ship" she was named by somesailors of the XVIII century who liked to talk to others about the jellyfish floating like a Portuguese warship of the Middle Ages. In fact, her body is very similar to this ship.

Its official name is a fisalia, but it's not one.organism. It's about the colony of jellyfish and polyps in different modifications that closely interact, and therefore look like one creature. The poison of some species of fisalia is deadly to humans. Most of the habitats of the Portuguese ship are limited to the subtropical parts of the Indian and Pacific Oceans, as well as the northern gulfs of the Atlantic Ocean. In more rare cases they carried away by currents in the waters of the Caribbean Sea and the Mediterranean to the shores of France and Great Britain, to Hawaii and the Japanese archipelago.

These jellyfish often swim in huge groups innumber of several thousand individuals in warm waters. Transparent and shiny jelly body rises above the water by about 15 centimeters and moves along a chaotic trajectory regardless of the wind. Those individuals who swim by the shore are often thrown out by powerful winds on land. In the warm season, the fisalia swims away from the shore, it moves along the current toward one of the poles of the earth.

Distinctive features of the physalia

Jellyfish interesting facts

Other interesting facts about jellyfish of this typeconcern their unique features. Fisalia is one of two biological species that can glow with red light. Another Portuguese warship uses as its sails its air bag filled with nitrogen, carbon dioxide and oxygen. If a storm is coming, the jellyfish lowers the bubble and goes under the water. Near her tentacles like to swim small perch, which do not feel a poisonous environment, have a serious defense against enemies, as well as particles of food. Perch by its appearance attracts other fish, which become food for these invertebrates. Here is such a symbiosis.

There are a number of species known today as fizales. In the Mediterranean alone, researchers discovered about 20 species of the Portuguese ship.

Fisalia of jellyfish, interesting facts about reproduction

Interesting facts about jellyfish

It is not known exactly howthis jellyfish multiplies. However, scientific research has shown that they multiply asexually, and in each colony there are polyps that are responsible for reproduction. In fact, they create new colonies. Portuguese ships are distinguished by the fact that they can reproduce continuously, therefore, in the waters of the oceans and seas, the number of nascent jellyfish grows.

Another common version about breedingphysalia indicates that, when dying, the jellyfish leaves behind some organisms, in which sexual signs appear, after which new individuals are formed. While this theory is not proved.

About the tentacles of the Portuguese ship

Medusa Portuguese boat interesting facts

Concerning tentacles of jellyfish interesting factsconsist in the fact that their device is unique. "Limbs" jellyfish are equipped with a large number of capsules containing a poison, whose composition is similar to the poison of the cobra. Each of these small capsules is a hollow, twisted tube with thin hairs. If there is a contact between the tentacles and the fish, the fish will die because of the stinging mechanism. When a person gets a burn from this jellyfish, he experiences severe pain, he will show feverish condition, breathing becomes difficult.

On this interesting facts about jellyfish are notend. The tentacles of these invertebrates can reach 30 meters in length. In addition, a person who is engaged in swimming, enjoying the process, can not always see on the water a bright blue-red bubble and realize the danger that threatens him.

Medusa irukandzhi: interesting facts about the danger emanating from it

Medusa irukunji interesting facts

This small jellyfish, which lives near the coastAustralia, produces poisonous substances that act stronger than cobra venom. There are 10 species of Irukandji, 3 of which are deadly. The bite is almost not perceptible, but the consequences of it - a powerful heart attack, which in some cases can end in a painful death. And all this can happen in just 20 minutes. Since these invertebrates are too small and almost invisible, they can easily penetrate any barrier network that is designed for large creatures that are dangerous for swimmers and holidaymakers.

There are some more interesting facts aboutjellyfish of this species. Since the fishermen often fell ill with a strange disease after each time they went to sea, they realized that the reason for this is contact with some inhabitant of the sea. Medusa was named after the Irukandji tribe. Over time, thanks to Dr. Barnes, it was finally possible to establish that the cause of the disease is contact with the jellyfish. Although its size is rather small, but the tentacles reach a length of 1 meter. The pain from the bite is so strong that it makes you bend in half, accompanied by a strong sweating and vomiting, legs tremble tremendously.


Although these invertebrate organisms are difficultconsider in the water, regardless of their size, yet it is not worth while swimming in the sea, walking along the shore, being careless and inattentive - for your own health. Many species of jellyfish are dangerous to human health and life.

However, they also perform useful functions in placestheir habitat, are used in medicine as raw materials for drugs. And who knows, maybe, mankind will be able to get even more benefits from jellyfish.