Due to ignorance and lack of scientific basis, these are just assumptions on the part of those saying this. Actually, the original statement comes from "It is difficult for parasites in sea water to survive in the human body." Since it is difficult to survive in the human body, it means that it does not exist in relation to humans. body, so there are no parasites in sea water. This is the logic of many people who say this.
There are no parasites in sea water? This conclusion is an erroneous conclusion, and the process of reaching this conclusion is erroneous, because the process by which people arrive at this conclusion is subjective and unscientific in nature. After all, although parasites in seawater have strict environmental requirements, it is difficult for them to survive in the human body. But this is only a “difficulty”. Insteadthan being unable to survive in the human body, there are a small number of parasites, or some parasites are able to survive in the human body due to a combination of circumstances.Even if not all parasites in sea water can survive in the human body, it only means that parasites in sea water cannot harm the human body, but This does not mean that there are no parasites in seawater.
This statement is somewhat similar to: What I have not seen does not exist in the world. “This is an extremely self-centered judgment and full of personal subjective conscience. This is not a scientific conclusion arrived at through rigorous scientific research and logical judgment.
The seawater environment is relatively complex and “seawater” is only a general term. Not all “seawater” is the same everywhere in the world.of. The composition of seawater varies considerably in different regions. Even if sea water in a certain area makes it impossible for parasites to survive, there must be sea water in other areas that can allow parasites to survive. It is absolutely impossible for organisms like parasites to only exist on land and in fresh water. The ocean represents a much bigger market than land and fresh water. Is it possible that after hundreds of millions of years of development, parasites still have no idea. ?
In summary, there are parasites in sea water. The reason why some people think that there are no parasites in sea water is that It is difficult for parasites in seawater to survive in the human body.