Why are there so many legends about water monsters and so few sea monsters?

People pay attention to water monsters because they are recorded in ancient books, and now there are traces of water monsters in various regions, which makes them more and more mysterious. However, there are few reports about sea monsters, probably because the sea is so big that even if there are sea monsters, it is difficult for people to find them.

But some people have seen sea monsters. The pictures of dragons caught by American sailors circulating on the Internet are actually not "dragons". Their names are "yellow croaker", but large deep-sea fish. It is 3-15 meters long and can reach 3 kilograms, and its body is bright silver; The ventral fin is red and paddle-shaped, and the head is like a mane crown. Rarely above the water.

There was a famous sea monster sighting in history, which was the "Ruiyang Pill" incident. At that time, a Japanese trawler was trawling on the sea. This fishing boat was the Japanese "Ruiyang Maru". When the fishing net was pulled up from the 3-meter deep sea, what everyone saw was a mass of rotten meat with glistening flowers. At that time, Yano, the production director, thought that the mysterious body was not simple, so he reported it to his superiors. As soon as the news was sent out, it caused a sensation in Japan. Later, it was discovered by scientific research that it was a "plesiosaur"

And earlier, an Iranian patrol boat found something unusual in South Pass of the Persian Gulf. The crew found a creature floating near the oil drilling platform that they had never seen before, but the ship could not drag the huge mysterious body back to the shore, so they took a lot of photos, which became the only information. Until a few years later, people are still talking about not knowing what this monster is. Although biologists think it is a whale carcass, some people still think it is a monster or dinosaur-like extinct creature.