99 fact about jellyfish that you should knew about it



1) Some jellyfish can glow in the dark

Many jellyfish have glowing bioluminescent organs. This light can help them in many ways, such as attracting prey or distracting predators.


2) Some jellyfish are immortal

Jellyfish life is divided into two stages: fixed polyp stage and floating jellyfish stage. When talking about jellyfish, it usually refers to the Medusa stage. Normally, jellyfish develop from polyps to Medusa, but Turritopsis nutricula is nicknamed "Immortal Jellyfish" for being able to return to the polyp stage when stressed.

3) Jellyfish can teach us effective underwater propulsion

The movement of the bell jellyfish gave researchers a new understanding of advancement. The flexibility of the umbrella body allows them to pulsate up and down without consuming a lot of energy. Researchers have created bionic robots with flexible bells that may one day bring better submarine vehicles.

4) Jellyfish can clone themselves

If the sea is cut in half, the fragments of sea jellyfish can regenerate and produce two new creatures. Similarly, if a jellyfish is injured, it may clone itself and may produce hundreds of offspring.

5) There is a huge jellyfish called pink little girl

The scientific name of this jelly is Drymonema larsoni, but its aggressive sting and unique color have earned it the nickname "Pink Little Animal".

6) Jellyfish has no brain


In contrast, jellyfish have neural networks that can sense changes in the environment and coordinate animal responses.

7) The jellyfish movement has inspired a new way of flying

It is not surprising that the jellyfish became the inspiration for swimming robots. However, it is even rarer to see marine life-inspired aircraft, but this is what happened at New York University.

8)  Jellyfish powder has been used to make salted caramel

Turtles eat jellyfish, large jellyfish may eat small jellyfish, but is jellyfish suitable for human consumption? A group of high school students in Japan came up with a salted caramel recipe using powered jellyfish. It is not a vegan, but it is a way to deal with invasive jellyfish.


9) Glowing jellyfish can power medical equipment

Another jellyfish-derived product uses jellyfish's fluorescent protein, which can be used to power medical devices in the future.

10) Jellyfish are surprisingly good at shutting down nuclear reactors

Over the past decade, the proliferation of sea blooms has led to the shutdown of several nuclear reactors, which often rely on the intake of seawater. Jellyfish colonies can block the inlet pipes, forcing the facility to temporarily stop running.

11) Jellyfish will eat peanut butter

Peanut butter jellyfish! Need me to say more?

Okay, I will: Two aquaculture farmers in Dallas, Texas, created a brine / peanut butter mixture and fed it to moon cakes. Clearly, Jellyfish found this mixture to be an acceptable source of protein. The researchers wrote: "We are happy to declare that the purpose of our experiment is noble, but the fact is that we just want to make peanut butter and jellyfish just to see if we can do it."

12) Jellyfish is almost entirely composed of water - About 5% of jellyfish are made up of structural proteins, muscle and nerve cells, while the remaining 95% is water. In contrast, the body's water content is as high as 60%.


13) A group of jellyfish can use three different namesThe fauna usually has its own name:-Heard a group of cows, for example, many fish swimming together is a school. Jellyfish groups can be represented by three different names. A group of jellyfish is called "bloom", "snacks" or "herds."

14) Jellyfish are not fish at all - Despite the name of the jellyfish, it is not a real fish. Fish are vertebrates that live in water and breathe through and. On the other hand, jellyfish are invertebrates, which means they have no skeleton, and they absorb oxygen from the water through the membrane.

15) There are more than 25 kinds of edible jellyfish - Jellyfish can be delicacies-there are over 25v edible jellyfish. They are usually found in salads or picked. Some people say that their salty taste is similar to the consistency of noodles.

16) Jellyfish can be found in all seawater - Because jellyfish tend to follow the tide of the ocean, they can be found in various seawaters around the world. They can thrive in warm tropical water or cold arctic water. They were found near the seabed and the surface.

17) Jellyfish eat other marine life - Jellyfish usually eat small plants, shrimp or fish, and then use their tentacles to stun the prey before they are eaten.

18) Some jellyfish are bioluminescent - Bioluminescence is the term for the ability of organisms to produce their own light. Some jellyfish produce this light and produce internal halos.

19) The size of the jellyfish ranges from the rubber tip of a thimble or pencil to about 8 feet in diameter, and the antennae can reach 200 feet. Just two blue whales.

20) Each jellyfish tentacle contains thousands of cells called "cells." Inside the nucleated cells are nematode sacs, and each cyst contains a coiled barbed wire. When fish or other objects become entangled in the tentacles, the pressure in the nematode sac unleaps the poisonous thread like a spring harpoon.

21) The main defense mechanism of jellyfish is stabbing and transparent body, which makes it easy to hide.

22) Though jellies are soft-bodied and lack a skeleton, making fossils rare, there is evidence that jellyfish predate dinosaurs by some 400 million years.

23) Many neurosurgeons say that popular treatments for tingling, such as vinegar, urine or meat tenderizers, are not helpful for treating tingling. Instead, the best way is to get it out of the water immediately and wash the affected area with salt water (do not use fresh water). Salt water will inactivate stinging cells, and fresh water or tap water will activate them. The best way to delete a cell is to use something like a credit card.

24) Jellyfish has a short tube hanging from its body. The tube acts as both a mouth and a digestive tube. In some jellyfish, the central tube is surrounded by pleated fragments that look like curly ribbons in water. These are called oral arms or mouth arms.

25) Jellyfish have no brain, heart, ears, head, feet, legs or bones. Their skin is very thin and they can breathe.




26) Although jellyfish do not have a brain, they have a basic nervous system, and their receptors can detect light, vibration and chemicals in water. These functions and the sense of gravity allow jellyfish to orient and guide themselves in the water.

27) Jellyfish are invertebrates, which means they are animals without bones. About 95% of their bodies are water.

28) Jellyfish are usually found in shallow coastal waters; however, scientists have discovered some species that live at a depth of 30,000 feet (9,000 meters). Although most jellyfish like warm water, some aquatic animals live below the Arctic.

29) The jellyfish tentacle will still sting even if it is separated from the jellyfish body.

30) The smallest jellyfish in the world is a bell-shaped disk with a diameter from 0.5 mm to a few mm. It reproduces vegetatively by splitting in half. Another competitor to the smallest jellyfish is the highly toxic Australian Irukandji, which is only the size of a nail.

31) The largest jellyfish in the world is the jellyfish in Nomura. Other candidates for large jellyfish are the lion's mane jellyfish and the giant mouth king.

32) In the past 110 years, I have only seen giant jellyfish 17 times, namely giant beak.

33) Portuguese soldiers look like jellyfish, but not real jellyfish. In fact, it is not even an animal. It is a kind of siphon, an animal composed of a group of creatures working together. Specifically, the "War Man" consists of four independent polyps. The polyp at the top is a gas-filled bladder, reminiscent of the sails on an ordinary ship that was once a battleship.




34) Asexual and sexual reproduction of jellyfish. They are usually male or female, although hermaphrodites are also found.

35) The life span of jellyfish varies from a few hours to several months. According to reports, the lifespan of a species is up to 30 years. Jellyfish in aquariums usually live longer than in the wild. Because jellyfish are very fragile, it is easier for people to catch jellyfish at the polyp stage when the polyps are most vulnerable.

36) Most jellyfish are passive carnivores. They feed on plankton, crustaceans, other jellyfish, fish eggs and small fish. They feed and empty through the same hole in the bell.

37) There are several predators of jellyfish, including other jellyfish, sharks, tuna, swordfish, turtles and a type of Pacific salmon.

38) A jellyfish, Turritopsis nutricula, is also known as "eternal jellyfish" because it can change from a mature Medusa state back to a polyp state, thereby basically avoiding death. It achieves this goal through a cell development process called trans differentiation.

39) The most common jellyfish on the coast of North America and Europe is the moon jellyfish. This jellyfish is usually blue or pink and is found in waters about 20 feet (6 meters) deep. Its stinging is usually mild, but it will leave an itchy rash.





40) Even dead jellyfish can sting.

41) Jellyfish have lived in the waters of the world for more than 650 million years before the dinosaurs, making it the oldest multi-organ animal.

42) Portuguese combatants can grow to 165 feet (50 meters) long, although more typically 30 feet. On baseball diamonds, they will go from home run to first base, then more than half reach second base. Sometimes wars can be observed in groups of 1,000 or more in warm water. To avoid threats, they can put air bags and sink briefly underwater.

43) The inverted jellyfish will not float in the water. Instead, it anchors itself with its short arms and tentacles reaching the bottom of the sea. It looks like a bowl of plants, not a typical jellyfish.

44) Sometimes I see crabs riding a jellyfish hitchhiker. The hard shell of the crab protects it from the sting of jellyfish. Crabs also often catch small amounts of food caught by jellyfish.

45) There are more than 2,000 different types of jellyfish. Boxed jellyfish (Chironex fleckeri) is the most dangerous, and about 70 people will be injured. Scientists believe that there may be as many as 300,000 different jellyfish species yet to be discovered.

46) Jellyfish are not fish. They are actually plankton of the Cnidaria phylum (Greek for "stinging nettle") and the Scyphoza class (from the Greek "cup"). Some aquariums are trying to promote the term "jellyfish" or "jellyfish" instead of jellyfish.

47) Jellyfish basically move in two ways. They picked up the water in the bell and sprayed it behind them, forming a stream of water and moving it forward. They also drift with the current.

48) The body of the jellyfish has six parts. The inner layer is the gastric mucosa, which is located in the cavity of the gastric blood vessel. The middle layer is a thick substance called mesoderm. The outer layer is the epidermis. It also has an orifice and tentacles.




49) Researchers believe that the shipping industry has artificially distributed jellyfish into non-native habitats and then settled here. Ships transport jellyfish around the world in two ways: 1) juvenile jellyfish (polyps) attach to the hull and travel with them; 2) the ship receives ballast water at the port of departure and then dumps its ballast water (and jellyfish and Other creatures) in new waters. Billions of gallons of ballast water are transported worldwide every year.

50) Jellyfish are aggressive colonists. In 1982, eight years after the introduction of comb jellyfish into the Black Sea, their total volume was about 900 million tons. Jellyfish caused $ 350 million in damage to the Black Sea ’s fisheries and tourism.

51) Environmental pressure may increase the jellyfish population. Jellyfish is one of the very few organisms that can adapt to dead areas in the ocean or areas with little oxygen and pollution. There are more than 400 marine dead zones in the world.

52) A group of jellyfish called flowers, swarms or spots.

53) The sea bloom near Japan can hold more than 500 million sea lyes, each of which has the size of a refrigerator.

54) After the jellyfish plunged into the cooling system, it has been responsible for temporarily shutting down nuclear power plants in Japan. The Japanese refer to these jellyfish as Echizen Kurage, or in English as the jellyfish of Nomura.

55) The weight of jellyfish is more than 10 times that of the fish caught every year in the world.

56) About 150 million people in the world come into contact with jellyfish every year. About 200,000 people are stung every year in Florida, and about 500,000 people around Chesapeake Bay.

57) Many scientists believe that environmental stress factors (including climate change, pollution, overfishing of fish and dams) have caused the spread of jellyfish.

58) Harvest the collagen in jellyfish. Collagen can be used for many purposes, including the treatment of rheumatoid arthritis.

59) In 2007, the jellyfish flourished and the salmon farm in Northern Ireland was killed, killing more than 100,000 fish.

60) Jellyfish belong to Beatenia. All animals in this group are radially symmetrical. Other animals in this category include water snakes, anemones and corals.




61) In some parts of the world, jellyfish are considered delicious. For example, in Malaysia, people call them "dental music". Each year, it eats hundreds of metric tons of sea and sells for 15 dollars per pound, which makes it a multi-million dollar business. The most commonly eaten jellyfish is shell jellyfish.

62) In 2002, an American tourist died after being injured by the fatal Irukandji jellyfish near the Great Barrier Reef in Australia. This jellyfish is only the size of a thumbnail, but can have three-foot tentacles. Most jellyfish have staves on their antennae, but Irukandji jellyfish also have staves on their bells.

63) An adult jellyfish is named "Medusa" (plural "medusae"), named after the snake of the Greek monster Medusa.

64) In the 2008 movie "Seven Pounds", IRS agent Ben Smith played by Will Smith committed suicide and shared a bathtub with a deadly jellyfish. The title refers to the "seven ponds" of meat that Will Smith gave to others to make up for the loss of killing seven innocent people in a car accident.

65) Jellyfish digest food quickly. If they must carry a lot of food, it will be difficult to float.

66) The venom in a single box of jellyfish can kill 60 people.

67) Jellyfish kill more people than sharks each year.

68) Different jellyfish give birth in different ways. Some jellyfish eject eggs from their mouths to fertilize them in vitro. Others leave the eggs in their mouths until they develop enough to live alone.

69) Most jellyfish have two basic stages of life. In the first stage, they are called polyps and grow by growing buds like plants. Then, the polyps sprout from the tender jellyfish. After a few weeks, laver will become an adult jellyfish or jellyfish.

70) Jellyfish consist of more than 95% water. If they are removed from the water, they will collapse and die.


71) The boxed jellyfish is unique because it has 24 eyes, four parallel brains, and 60 anal areas. Its two eyes can see the color. It is also one of the animals in the world that can observe the surrounding environment in 360 degrees. Boxed jellyfish are not considered to be "real" jellyfish of the Scyphozoan type.

72) Jellyfish staying near the sun on the water surface are often colorless. The jellyfish swimming deeper are usually red, purple, green, yellow, and sometimes may even have stripes.

73) A military mechanical jellyfish has been created to perform search and rescue and investigation tasks. Silicone "Robojelly" uses hydrogen and oxygen as fuel when swimming, so the only "exhaust gas" is heat and water. Its muscles are made of shape memory alloy, which is a metal invented by NASA to "remember" its original shape.

74) The jellyfish crest that looks like a mushroom crest is called a bell shape.

75) Scientists divide real jellyfish and boxed jellyfish into two different groups. The real jellyfish is a dolphin, meaning "bowl animal". The box jellyfish is a cubic animal, meaning "cubic animal". The real jellyfish clock is round like a bowl. The jellyfish bell in the box has sides and rounded corners, and is shaped like a box.

76) Scientists have developed anti-snake venom for box jellyfish. In Australia where boxed jellyfish live, ambulances and hospitals can save life-saving venom anytime, anywhere.

77) The lion's mane jellyfish is the largest of the true jellyfish, with a tentacle length of up to 120 feet (36.6 m). Its bell can span up to 7 feet 6 inches (2.3 m). It lives in oceans around the world and feeds on small fish, shrimp and other small jellyfish. Its sting is painful, but it is not fatal to humans.

78) The deadliest and most toxic marine life in the ocean is the boxed jellyfish, also known as "marine stinger" and "sea bee".

79) In Australia, an average of 1 person is killed by boxed jellyfish each year. Boxed jellyfish may kill up to 100 people each year in other parts of the world (such as the Philippines, Indonesia, and Thailand).




80) Both real jellyfish and boxed jellyfish use their thorny tentacles to grab shrimp and small fish as food. However, boxed jellyfish are active hunters, mainly because they have eyes, not real jellyfish. They are also better swimmers. Boxed jellyfish can swim at 4 miles per hour, which is faster than most people can swim.

81) Unraveling the jellyfish's little ing son is one of the fastest moves in nature. The stinger's firing speed is even faster than the bullet's firing speed.

82) Boxed jellyfish may cause a person to stop the heart beat in about two minutes.

83) They defecate at the place where they eat.
It may not sound appetizing, but jellyfish do not need a separate hole to eat and defecate. They have an orifice that can do both oral and anal tasks.

84) Their mouth is located right in the middle of their body and is used to eat, discard waste and push themselves forward by spraying water into it!

85) Jellyfish can eat anything, including fish, shrimp, crabs, tiny plants, plankton and other jellyfish!

86) They themselves were eaten! Turtles like to devour jellyfish, and so are humans in some parts of the world! They are considered as delicacy in China and also used in Chinese medicine.

87) Unfortunately, the jellyfish life is not long, ranging from a few hours to a year.

88) Not all jellyfish have tentacles, but their tentacles are often used to capture and fix prey.

89) Jellyfish are not fish at all. Although they have a name, they are actually invertebrates because they have no backbone.

90) They come in various shapes and sizes, ranging from 2 cm to 2 m! Some are transparent or translucent and difficult to see, while others are bright colors (such as pink, blue, purple and yellow) that are dazzling.



91) Some jellyfish's tentacles will sting. Although most are harmless to humans, they may be extremely toxic and very painful, and even fatal. For safety reasons, if you find jellyfish in the water, always pay attention to the surrounding environment.

92) Jellyfish are like zombies and have no brains! Well, now it becomes very scary. They have a neural network of the brain instead of the brain, which can sense changes in the surrounding environment and guide its response. In addition, jellyfish have no heart, bones or eyes.

93) Speckled jellyfish: Another bell-shaped jelly. The spotted jellyfish is usually golden and up to 12 inches in diameter, although the average size is about 4 inches. A strange fact about these jellyfish is that they have multiple mouths on their arms to catch the small plankton they eat. Although they do have stings, the venom is so mild that it does not cause problems for humans.

94) Moon jellyfish: Although they can grow to 10 to 16 inches in diameter, moon jellyfish have only mild stinging cells. If the boxed jellyfish resembles the sting of a bee, then the moon jellyfish is more like a mild ant bite. You may feel it, but there is no injury.

95) Jellyfish can be seen.
If you look very closely at the edge of the jellyfish umbrella, you will find a small organ called rhopalia. They contain the sensory structure of jellyfish: not only light organs, but also balance organs, current sensors and chemical receptors. The box jellyfish has four horizontal stripes, each with only 6 eyes, for a total of 24. There are eight fully functional lenses, a retina and an iris. The iris will brighten and darken like our iris.

96) Jellyfish spend all their time searching for food, escaping predators or looking for partners

97) The life span of jellyfish is very short: some small species can only survive for a few hours, while the largest species, such as lion's mane jellyfish, can survive for several years.

98) The jellyfish hatch from the egg, the female discharges the egg into the water, and then the male fertilizes it. What came out of the egg was a free-living plankton.

99) Pay attention to jellyfish on the water and the beach. Even the tentacles separated from the jellyfish can sting.


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