Jellyfish are the most mysterious petites in the ocean, dating back 650 million years, before dinosaurs. They are found in more than 250 species in waters around the world.
These water elves, with their delicate bodies and flowing tentacles, give people a dreamlike beauty when swimming, like elegant dancers in the ocean, which is tireless to watch.
However, beneath that magnificent appearance and swaying posture, there are still many little-known secrets.
01, gentle marine killer
Jellyfish look soft and weak, but they are not easy predators. Many jellyfish have deadly venom hidden in their antennae.
On June 10, a well-known artist posted a photo post revealing that he was stung by a jellyfish into a sieve due to the need for underwater shooting.
Netizens realized that good-looking roses are always prickly, and beautiful jellyfish are no exception, and this soft and cute little creature should respond to the famous sentence of "can be viewed from a distance and cannot be blasphemed".
02, monk hat jellyfish, with a highly toxic "plastic bag"
There is a jellyfish that, when washed onto the beach, looks like plastic bags, balloons, and ribbons everywhere, and children and even adults are easily curious and reach out to touch.
They, on the other hand, are extremely dangerous, highly poisonous monk-hat jellyfish.
Don't look at the monk's hat jellyfish looks ordinary, but the neurotoxin it secretes is extremely brutal, and the intensity of the toxin accumulated by thousands of thorn cells is not inferior to any poisonous snake in the world!
The tentacles, which average up to ten meters long, also bring an attack range that the poisonous snake cannot reach, and when people see it in the water, they may not be able to escape.
03, Australian box jellyfish, the world's first poison king
The tank jellyfish is the most toxic to humans known on earth, and the most toxic of them is undoubtedly the Australian tank jellyfish.
It is a pale blue translucent jellyfish with a slightly rounded shape, like a square box floating in water. Surprisingly, this little guy with a side length of only 20 centimeters is enough to poison 60 adults.
If after poisoning, there is no emergency treatment within 4 minutes, it is basically powerless to return to heaven, so the Australian box jellyfish has also been selected as the first of the "World Poison King".
04, peach blossom jellyfish living in fresh water
Not all jellyfish live in the ocean, and peach blossom jellyfish are jellyfish that live in freshwater.
They were first born about 550 million years ago, and they have extremely high requirements for the living environment, and if the water quality is polluted, they may all become extinct within a few days.
Peach blossom jellyfish is also a veritable "living fossil", with high research value and ornamental value, beautiful, rare and paleontological characteristics also make it known as "giant panda in the water".
Because of this, when they appear in a certain water, they can always cause public onlookers and media reports.
05, a lighthouse jellyfish that can "rejuvenate"
Having eternal life and immortality is the dream of many people in ancient and modern China and abroad, but there is a kind of lighthouse jellyfish that realizes this wish of many people.
In general, jellyfish slowly die after sexual reproduction, but lighthouse jellyfish can return to the hydra body from adult jellyfish, which is unique in known nature and can recover from the sexual maturity stage to the larval stage.
And theoretically, there is no limit to the number of times this process, and they can gain unlimited lifespan through repeated reproduction and differentiation transfers.
Therefore, the jellyfish, which is called "immortality", should be "rejuvenated" to be precise.
06, sea moon jellyfish, lover's tears
The sea moon jellyfish is the most widely distributed jellyfish species and is also the most common jellyfish in captivity.
It is transparent throughout, with four heart-shaped stomachs in the middle of the umbrella body and four streamer-like mouths and wrists. When floating on the surface of the sea, it is like a bright moon reflected in the sea.
According to legend, there was a zeus at the beginning of heaven and earth, and in order to protect the moon and the earth, it resolutely blocked the huge meteorite with its body and died with it.
After that, the moon's sad tears fell to the sea, and they transformed into sea and moon jellyfish. Therefore, the sea moon jellyfish has become the embodiment of love and thoughts between lovers in the world.
07. Accurate storm forecaster
You know what? Jellyfish have no heart or eyes. So how do they feel about the outside world in the water?
In fact, jellyfish have a very developed sense of hearing, and after hearing infrasound waves emitted by storms or tsunamis thousands of miles away, they will hide early in the calm depths of the ocean to avoid being shattered by ferocious waves.
Scientists were inspired to simulate their sensors and successfully made storm forecasters to predict the arrival of storms at sea, which provided great convenience for the development of navigation work.
08, simple but extraordinary sea spirit
Jellyfish are very tolerant of low oxygen, and in many parts of the ocean, due to pollution or changes in water quality, the oxygen content in the sea water is reduced to a very low level, and other marine organisms cannot survive.
But only jellyfish can survive in the seas known as "ocean deserts" and bring a little life to these silent oceans.
Although 95% of the jellyfish's body is water, there is no bone or muscle, and it seems to be weak, but it can always find a shelter in the vast sea with soft kegang.
Dreamy under the sea, it is a playful elf, with a short stunning, lighting up the endless "starry sky".
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