People can't live in water, which means that the sea may become a threat to people's lives at any time. If you are unfortunate enough to drift at sea, if you don't find land in a short time, your chances of survival will be very slim. First of all, the solar radiation at sea is more than twice that on land. On the sea, you are not much different from staying in a solar furnace. This kind of radiation will make people thirsty, but if you choose to drink seawater, it is equivalent to death. The most terrible threat at sea is never the great white shark in the movie, but the endless despair without food and fresh water.
If sailing in the sea is unfortunate, it will be even more tragic, because the chances of being rescued are very slim, and almost no one can survive when help comes. When a boat capsizes, it will sink into the sea. Without a carrier, people can hardly live in the sea.
Of course, the sea still gives people a lot of illusions. The vast sea is beautiful, so even if it is dangerous, there are still many people yearning for it.