BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Are jellyfish dangerous? Detailed answer Directory / Big encyclopedia. Questions for quiz and self-education Did you know? Are jellyfish dangerous? Jellyfish are the strangest sea creatures because they are made entirely of a gelatinous mass. They do not look like fish and are not their relatives. The sting serves as protection for them, which causes discomfort and can cause dangerous consequences. The shape of a jellyfish resembles an inverted bowl. Under the bowl is their digestive system. The digestive system ends in a tube that hangs down from the center and has a bell at the bottom. The tentacles located around the circumference of the bowl are used for collecting food and for swimming. Between the tentacles are nerve centers and sensory organs. The cup-shaped body of a jellyfish consists of two thin layers of tissue with a jelly-like layer between them. If a jellyfish is pulled out of the water, it will dry out very quickly, because its body is 98 percent water. Of course, if the jellyfish is small, then the burns from its sting may not be very dangerous. But with big ones it's different. Experts say that there are jellyfish in which the body reaches four meters in diameter, and tentacles - up to 30 meters in length. If a jellyfish like this "hugs" you, then you may have difficulty breathing, or partial paralysis may occur. The Portuguese soldier, one of the largest jellyfish, can kill and eat a whole mackerel. On the coast of Australia, the sea wasp jellyfish is known to be the cause of many deaths. What makes a jellyfish dangerous is its tentacles. Some of them are equipped with thorns that dig into the body of the victim. The spines are associated with poisonous glands that kill or paralyze the victim. Author: Likum A. Random interesting fact from the Great Encyclopedia: Why did Theseus and Pirithous descend into the underworld? When Hippodamia, the wife of Pirithous, and Phaedra, the wife of Theseus, died, the two widowed heroes decided to marry the daughters of Zeus. Theseus chose the Spartan princess Helen, sister of the Dioscuri, and Pirithous helped him kidnap her. In the bride of Pirithous, friends decided to get Persephone herself, the wife of Hades. They descended into the underworld and, somehow forcing Charon to transport them across the Styx and past the watchdog Cerberus, soon knocked on the doors of the palace of Hades. The lord of the realm of the dead calmly listened to their unprecedentedly brazen demand and, pretending to be hospitable, invited them to sit down. Suspecting nothing, they sat where it was suggested, and found themselves on the throne of oblivion. Theseus and Pirithous were rooted to the stone throne so much that they could no longer get up from it without being crippled. They were scourged by the Erinyes and torn with their teeth by Kerberus, and Hades looked at all this and grinned grimly. When, four years later, Hercules came to the kingdom of Hades to pick up Kerberos, he recognized two friends. They silently held out their hands to him, begging for help. Persephone graciously allowed Hercules to free her hapless kidnappers and take them with him if only he could. Hercules tore Theseus off the stone and returned to the ground, but when he tried to free Pirithous, the earth shook, and Hercules was forced to retreat. True, there are those who believe that Theseus and Pirithous never descended into the kingdom of Hades, but tried to kidnap the wife of the king of Thesprot. He, having found out in time about the unholy plan, took the insolent prisoners prisoner, threw Pirithous to be eaten by dogs, and Theseus imprisoned, from where Hercules rescued him.
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