Shoelace worm is a creature that lives on the bottom of the sea. It catches prey with its beak, usually attached to rocks, seaweed, barnacles or mussel beds, or buried in sand or gravel substrates. Belonging to carnivores, they can wrap themselves around much larger prey, such as crustaceans or annelids, and then repeatedly stab the prey with needles on their beaks until the prey dies.
Some lion-maned jellyfish are famous for their long tentacles. Lion-maned jellyfish live in cold water in the Arctic, North Atlantic and North Pacific, with a red-gold bell-shaped head and a cluster of long, narrow and translucent tentacles. 1870 A giant lion's mane jellyfish 37 meters long was found washed up on the coast, which is longer than the largest blue whale.
Because most mollusks never petrify, other mollusks that have been extinct in the past are equivalent to disappearing forever, so there may still be animals over 100 meters.
For vertebrates, the longest dinosaur found so far is Amphicoelias fragillimus, which belongs to a double-chambered dragon, but its length is only speculation, because no complete skeleton has been found. Large dinosaurs were almost never completely preserved because they could not be buried in time and were not protected from scavengers and environmental erosion. 1878 first described the vertebra of Amphicoelias, which was 2.4 meters high. Unfortunately, its fossils were broken or lost due to the lack of preservation technology, which made it impossible for further study.
Therefore, in order to accurately reconstruct Amphicoelias fossils, it is necessary to compare the description of the original fossils with that of a more complete genus of the same kind. Liang Long, a sauropod, is considered to be the closest species to Amphicoelias. Taking Liang Long as the main body, its bones are enlarged and amazing results are obtained-the length of Amphicoelias is estimated to be 60 meters long, which is not only the longest dinosaur in the world, but also the longest vertebrate known on the earth, twice that of Argentinosaurus, the largest dinosaur at present.
It is wrong to say that all animals were enlarged tens of millions of years ago. It should refer to some giant insects that appeared in the Carboniferous due to the increase of oxygen content in the air. However, in Carboniferous, only insects were large in size, because the breathing mode of insects was special. Depending on the free diffusion of oxygen, their size would increase because of the high oxygen content. But at present, only a few large insects have been found, and it is not too outrageous.
Impossible, 100 meter is too long, and such a length is a huge burden to animals. There is a big difference between "magnifying" and "enlarging". As the largest living and known animal, the blue whale can reach 33 meters in length.
The largest snake in history is titanoboa, with an estimated length of12.83-14.3m and a weight of1.1-0/.5t. None of the existing snakes can exceed 10 m, and the osmanthus fragrans with a height of 14.85 m is purely a boast.
The longest snake in existence is the reticulated python, and the longest reticulated python can be more than 8 meters in length. At present, the largest reticulated python accurately measured is Medusa in Guinness World Records, with a total length of 7.67 meters and a weight of 158.8 kg. The largest fish in history is Megalodon, which can reach 20.3 meters in length.
The largest fish in existence is whale shark, and the largest individual accurately measured is full length12.65m, body weight 210.5t.. However, the credible maximum length record of whale shark is18.8m.. Sharks are cartilaginous fish, and the largest bony fish in existence is yellow croaker, and the maximum length can reach 1 1 m.
The king squid can grow to 14 meters long, and the king squid can grow to 6-8 meters long.
Crocodiles can grow to 6 meters long and weigh more than 1 ton.
These are some very famous large animals, but their length is far from 100 meters. The longest living and known animal is an unknown lower animal.
/kloc-in 0/864, a very long marine worm was found on the coast of Scotland, reaching an astonishing length of 55 meters. This marine worm is the giant longitudinal groove worm, belonging to the phylum Neuralta. Nematoda gigantea is very long but thin, with a width of only 5- 10 mm, which is not as big as a basketball when it is grouped together. The tentacle length of lion mane jellyfish can reach 37 meters, which is longer than that of blue whale.
Judging from the above data, animals with a length of 100 m have been found at present, and even the longest giant Nematoda is far from 100 m..
For any animal, 100 meter is a burden, the first action is a huge problem, and the second energy consumption is also very large, and no animal will evolve beyond this direction.
Up to now, among all the animals known to man, the body length has not exceeded 100 meters. The longest living animal is the blue whale, and the longest found blue whale is 29.9 meters long. However, the blue whale is not the longest animal in the history of biological development. According to the fossils found, the longest animal is a giant dragon.
Let's briefly discuss the longest animal in history and the possibility of animals exceeding 100 meters.
First of all, let's take a brief look at the history of Megasaurus in the development of life on earth. If you want to ask which period or stage, the size of animals is the largest (average)? That must be the age of dinosaurs. From the late Triassic period, 235 million years ago, the dinosaur BLACKPINK appeared, and quickly became the top animal in the food chain on earth at that time. From Triassic to Jurassic and then to Cretaceous, dinosaurs not only showed diversity, but also developed in an enlarged state. By the Cretaceous, large dinosaurs were the most dinosaur era, such as Argentinean dragon, Tyrannosaurus rex, earthquake dragon and so on.
When it comes to the largest dinosaur, there are many different opinions, and there are even great conflicts in some related materials. Some people say that the Argentine dragon is the largest, some people say that the earthquake dragon is the largest, and some people say that the fragile double-chambered dragon is the largest. In fact, these statements are all wrong.
The biggest dinosaur in history is a giant dragon. Many friends may not know much about Megasaurus, in fact, biologists know little about it, because so far, biologists have only found two relatively complete fossils of Megasaurus in India, and the other parts are very fragmented, so it is difficult to be used as a reference.
From the fossil tibia of Megasaurus, its tibia is about 2 meters long and its humerus is about 2.3 meters long. Biologists compared the two bone fossils of Megasaurus with those of Argentinean dragon, and found that its tibia was 29% (1.55 m) longer than that of Argentinean dragon, and its humerus was about 30% (1.8 m) longer than that of Argentinean dragon, which was about 40 meters long and weighed about 90 tons. According to the difference of tibia and humerus between Argentinosaurus and Megasaurus, biologists concluded that the adult Megasaurus was about 50-62 meters long and weighed about 200 tons.
Therefore, the giant dragon is the longest animal in history.
Is it possible that animals over 100 meters long existed on the earth? I think it is possible. Why do you say that? There are two reasons.
First, the unknown nature of prehistoric creatures.
We know that dinosaurs can only be found fossils, and the formation of fossils has many necessary conditions. Therefore, it is not excluded that dinosaurs with a body length of more than 100 meters did not leave fossils. Or, so far, we just haven't found this huge dinosaur.
Second, the unknowns of existing organisms.
Although human beings have indeed stood in the position of "ruler" of the earth after millions of years of efforts, there are still many unknown creatures for the earth. Take the ocean as an example. The ocean area accounts for about 70% of the total area of the earth, but so far we have only drawn 5% of the seabed map of the ocean, which means that 95% of the ocean has not been explored, and in these unexplored areas, we can't deny that there may be animals whose body length exceeds 100 meters.
Personal view
Since the extinction of dinosaurs, animals on land have never surpassed marine animals in size, so the blue whale has always been the largest animal known on the earth. As an animal, every increase in the length of 1 times means that the strength of its body tissues, muscles and bones will increase by more than four times, and then its weight will increase by more than eight times. In other words, the increase of body length undoubtedly requires greater support, which is very difficult for land animals. However, for marine animals, the buoyancy of seawater can well solve the burden of doubling weight on the body.
Therefore, we don't rule out animals whose body length exceeds 100 meters, but I think this kind of animal can only exist in the ocean.
what do you reckon ?
Animals over 100 meter in the world have not been found, if any, they may be worms living in the ocean.
The lion's mane jellyfish is the largest of all jellyfish and one of the longest creatures in the world. They can be more than 37 meters long. 1870, giant lionhead jellyfish stranded on the coast of Massachusetts, USA, with a diameter of more than 2. 1 m. It was amazing for the people there, who recorded the details, including the drawings. Today, some of them have been found with a diameter as high as 2.4 meters.
The name of this jellyfish comes from their overall color and appearance. They are often depicted as the mane of a lion. Sometimes shrimp and other creatures in the ocean live around the mane area of lion-maned jellyfish, which provides them with habitat and safety.
The tentacle length of the lion-maned jellyfish can vary, and there are generally 8 bundles, each exceeding 100 bundle. The body of the lionhead jellyfish is bell-shaped, and the tips of its tentacles are like stars. They come in various colors, some of which include crimson, purple, light orange and brown.
The Atlantic Ocean and the Pacific Ocean are places where lionfish can be found. They prefer warm waters, such as those around Australia. It seems that what is found in the northern hemisphere is much larger than that found in the southern hemisphere. They often live in the deep sea.
However, when they begin to approach the end of their lives, they may begin to approach shallow waters. Although it is not fully understood why this happened, experts continue to investigate what caused this.
Like all jellyfish, this species can move vertically by itself, and the horizontal movement depends on the wind and current. Lionhair jellyfish are often farther from the coast than other jellyfish, so humans usually don't see them except in photos or when they land.
The sting of the lion's mane jellyfish will not kill healthy people, but it will still be very painful. It can cause burning sensation and itching. People with sensitive skin can also have rashes. Vinegar is a common method to relieve the stinging pain of jellyfish.
Zooplankton is the main food of lionfish, and all kinds of small fish and jellyfish can also be the food of lionfish, and lionfish seizes the opportunity to find edible food.
Lionhair jellyfish may reproduce asexually. They can provide their own eggs and sperm, so they can reproduce without a spouse. Summer and autumn are the times when a large number of small lion mane jellyfish appear. However, the mortality rate is very high. Although a large number of eggs are provided, less than half of them can survive for more than a few days.
Studies have shown that the difference in water temperature and food supply will affect the mating efforts of lionhead jellyfish. When there is enough food, they are more likely to mate. When food is in short supply, they may not participate in mating at all.
Birds and turtles are common predators of lionhead jellyfish. When they are young, they may also become prey for big fish. Lion-maned jellyfish are very adaptable to environmental changes, and there are no measures to protect them at present.
There may have been creatures 100 meter long in ancient times, but with the development and change of society, such huge creatures may become extinct because they can't find food, or they may become extinct for other reasons.
What about modern society? There shouldn't be such a creature 100 meter long! Because such a huge creature, no matter where it moves, may be discovered by human beings. In fact, the survival of such a large creature is a problem. Even if it once existed, it is difficult to exist for a long time.