Almost every sea area has been devastated by humans

In many ways, nearly all of the world's oceans have been destroyed by humans, of which 41% have been severely degraded, a study revealed yesterday.

This is the first global-scale study of human impact on marine ecosystems, published in the journal Science. Accordingly, coastal areas are being polluted by waste; oysters and fishing grounds are disappearing; floating islands gathered by garbage are gradually occupying the surface of the water before .

However, the biggest recession is from climate change."It causes extensive and profound effects," said co-author Kim Selkoe, at the University of Hawaii.

Significant changes in seawater temperatures have been observed in the North Atlantic between 1995 and 2005, and the global warming will also increase temperatures in many other regions. Rising seawater makes plankton thrive, and changes the position of species in the food chain. It also increases the incidence of disease and changes the circulation of the ocean. The oceans are also becoming sour as they absorb CO2, and plants have to catch more ultraviolet radiation.

" Another surprise for me is that the data show that 80% of the oceans have been caught by humans ," Selko said. "There is no place left for fish to hide ., fishing boats are almost everywhere." Commercial fishing has the worst impact with the unwanted dumping of millions of kg of fish, birds and dead animals. That threatens the life of many species depending on them like turtles, dolphins .

Water transport is the third most destructive factor, simply because they are too much. "When you look at the traffic map of ships, it covers the world's oceans," Selko said.

The most affected areas on earth include large areas of the North Sea, South China Sea and East Sea, Caribbean Sea, North American East Coast, Mediterranean Sea, Red Sea, Persian Gulf, Bering Sea. and some parts of the western Atlantic.

Only 3.7% of the ocean is considered to be a very low-impact area, and they are located in near-polar regions, where the bandages are permanently or seasonal, hindering human activity.