The ocean is beautiful and spectacular, many people say, the ocean is the source of life, it is pregnant with countless lives, from large to small, from strong to weak. What we bring to you today is the emergence of aquatic animals "jellyfish" that appeared earlier than dinosaurs.
jellyfish
Whether it is tropical waters, temperate waters, shallow waters, oceans about 100 meters deep, or even freshwater areas, they can be traced. Jellyfish existed as early as 650 million years ago, and they appeared even earlier than dinosaurs. There are more than 250 species of jellyfish in the world's waters, which are distributed in waters around the world, all living in the ocean.
Jellyfish are one of the few animals that can survive in the deep sea, and they can live in almost any water, such as the icy Arctic, the hot seabed craters, or the lightless deep sea, and most animals cannot survive in these environments.
The ocean is filled with billions of jellyfish, which for thousands of years have been overlooked by us, and for 600 million years, they inhabited the bottom of the deep sea, and this seemingly simple animal, in unprecedented numbers, has surfaced into the abyss. Jellyfish are prehistoric animals, with no bones, no blood, and no brains, but they have survived on the earth for hundreds of millions of years, they are beautiful in shape, elegant in movement, and they also have deadly weapons that other animals can't reach.
Echizen jellyfish
These brainless animals occupy the ocean, humans know almost nothing about jellyfish, but we have long ignored these amazing animals, they have indeed invaded the territory of hundreds of millions of invaders, in 2006 on the coast of northern Australia, 7-year-old girls and their families in the empty beach, playing in the waves, but the hot sun makes people want to swim in the water, parents watch their daughters walk into the sea only a few feet from the coast, the girl who went into the water suddenly felt a sharp throbbing pain in her legs, The venom also spread along her veins, and her parents were helpless.
The ambulance crew who rushed to try their best to carry out first aid, they have seen such cases, this is a box jellyfish sting, the girl has been shocked, the ambulance staff rushed to inject her with antivenom, but in vain, the girl's heartbeat has stopped, in just a few minutes, a young life has hurried away, the headlines of various countries have landed on the news of jellyfish injuries, and here also hope to play near the coastline, or work friends, be sure to know whether there are hurt jellyfish in the local sea, cautiously go into the water.
Nowadays, the number of jellyfish is increasing day by day, these beautiful and elegant prehistoric animals continue to flourish in the oceans, North American states, Africa, Europe, the Asian seashore, the number of jellyfish is constantly increasing, the ocean is filled with billions of jellyfish, the huge number threatens the entire ecosystem, leaving other creatures nowhere to live, the marine environment is changing, for thousands of years we have ignored these animals, beautiful but thoughtless, this animal seems to come from another time and space, they are the evolutionary miracle of life on earth.
For six hundred million years, they have been inhabiting the deep seabed, this seemingly simple animal, but in an unprecedented number of deep sea, but no one knows exactly how they surfaced in the deep sea, nor do they know why they floated out of the deep sea, to solve this mystery, you have to understand this strange life in all directions, understand how jellyfish live, where they float.
There are many types of jellyfish, but their body structure is very similar, all have round bell-shaped head tissue, all have transparent skin muscles and nerves, which is the perfect protective color, jellyfish is like a ghost that preys on the ocean, jellyfish has no claws and teeth, its advantage lies in the tentacles, there are a large number of deadly mixed venom on the tentacles, and only more than 70 of the various jellyfish currently documented have fatal poisons to humans.
The deadliest box jellyfish, this jellyfish is the world's most famous and most poisonous marine organism, and probably the most poisonous animal in the world, people do not know much about the box jellyfish, although the box jellyfish rarely attack people, this jellyfish alone is in Australian waters, causing many deaths, and many people have died because of attacks by box jellyfish over the years.
Fragrance jellyfish is not aimless drifting, but autonomous swimming, and swim very fast, faster than the Olympians, as if there is a goal of swimming, fragrance jellyfish can distinguish a lot of colors, will have a completely different reaction to color, obviously box jellyfish have vision, most people think that jellyfish have no eyes. Unlike the other jellyfish, but the fragrance jellyfish has eyes, and the box jellyfish's eyes are very delicate, I didn't expect a low-level creature to have such fine eyes.
The 24 eyes of the box jellyfish are concentrated in the 4 corners of the scattered body, so it has a 360-degree field of vision, and the eyes can see through their abdomen inwards, no one knows how the box jellyfish handles visual information, although this perception ability is a very powerful weapon, but it is by no means the deadly hidden weapon of the box jellyfish, and each tentacle of the box jellyfish has millions of tiny telescopic forks, that is, the barbed wire pack, these tiny structures are almost invincible in the world.
If there is an animal skimming the jellyfish tentacles, the stinger pack will emit venom, the stinger pack shoots out a force equivalent to 1.5 million gravitational acceleration, the acceleration is as fast as a bullet, this is one of the fastest biological processes in nature, the barb insert is located under the skin, millions of inserts inject venom into the prey, the mixed venom of the box jellyfish causes the human skin to blister and close the nervous system, causing the heartbeat to stop, the venom of the box jellyfish has another effect, locking the nerve receiver, immediately causing lasting severe pain, The venom of the box jellyfish has so far no cure.
Box jellyfish
In addition to small box jellyfish, there are also oversized Echizen jellyfish, in 2002 Echizen jellyfish has invaded Japanese waters once, its invasion caused considerable losses to fishermen, the number of Echizen jellyfish is currently more than 20 billion, nearly three times the total global population, Echizen jellyfish is very large, weighing up to 220 kilograms of umbrella body circumference up to 12 feet, it mainly lives in the middle of The Sea of Japan and China, as long as it is concentrated in the Yellow Sea and the East China Sea.
The uncontrolled increase in wild jellyfish may have been fueled by humans. Heavy rains in big cities pollute seawater, sewage will also create an ideal environment for these low-level organisms, sewage, fertilizers, industrial emissions contain high concentrations of nutrients to support the chain reaction caused by tiny phytoplankton, depleting the oxygen in the water, most organisms are thus driven out, the waters become stagnant water, almost no organisms can survive except jellyfish, stagnant water is an excellent jellyfish farm, jellyfish can survive for a long time in an almost anaerobic state, epidermal cells can absorb very little nutrients needed by jellyfish from the surrounding water Jellyfish are generally found in areas with backwaters, such as the Black Sea, the Mediterranean Sea, and even the Bay of Bechabik, the Gulf of Mexico in the United States, the earliest 8,000 square miles of backwater. Climate change will also accelerate the increase of jellyfish, leading to the emergence of a large number of jellyfish, jellyfish tenacity is impressive, perhaps the era of jellyfish is coming, we must find a way, and these mysterious animals of the deep sea, peaceful coexistence, share the blue ocean.
Small partners here a brief talk about the prehistoric box jellyfish, there may be more small partners familiar with more varieties of hurtful jellyfish, we may wish to discuss with each other, let people understand it, protect themselves from its harm.