Seen from space, the earth is a blue planet. This is because the oceans cover 71% of the Earth's total area.

There are four oceans on Earth, the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic Ocean.

As the most abundant compound on earth, water not only supports life on earth but also keeps the earth mysterious.

The sea is the most desirable place for human beings outside space, where hundreds of millions of creatures live.

But at the same time, because the sea is too deep for sunlight to reach the depths of the seabed, people have not yet known what kind of mysterious existence there is in the depths of the sea.

The sea makes people feel esoteric and frightening. In many sci-fi films, the sea is set as a field with huge unknown creatures, and people's reverie about the sea has never stopped.

The sea is scary mainly because people can't see inside it, but what if it's a clear and transparent ocean? Does this scenario still frighten you?

In the eastern part of the United States at the center of the North Atlantic Gyre, there is a sea area known as "the most dangerous in the world", but unlike the seas with turbid waters that people see in science fiction movies, this sea area is unusually clear.

The sea, called the Sargasso Sea, is about 2,000 nautical miles long and 1,000 nautical miles wide.

The water in this area is so clear that people can see the depth of 72 meters underwater with the eye. But as long as they stray into this sea area, almost all the ships can never return.

In fact, if you carefully understand this sea, you will find that it is not as peaceful as everyone imagined, nor as romantic as everyone imagines.

Because this sea area grows a large area of sargassum. This kind of thing is actually the natural enemy of ships. As long as ships are approaching, they will face great danger.

If it is entangled with sargassum, the boat will not be able to move, and the people here will die because they run out of ammunition and food. Such a terrifying creature would dare to approach here, which is why this sea has the terrifying title of "Ocean Graveyard".

After scientists' exploration, it was found that the Sargasso algae here are so powerful because their location is surrounded by 4 large ocean currents.

So as long as the ships passing by here will lose their direction under their interaction and get lost in this sea, these ships have no way to move forward. Who would have thought that such a calm sea could make countless ships lost?

It was the great navigator Columbus who first discovered this sea area. When he walked into these fairyland-like waters, he realized that he had fallen into a "trap".

In the beginning, Columbus and the crew barely escaped from this sea after struggling for more than a month.