One of the most important sources of microplastics is the takeaway, express delivery, supermarket shopping bags and other plastic products that people usually throw away. These plastic wastes are continuously broken in the environment and decomposed into countless small plastic fragments. microplastics.

Since the invention of synthetic plastics at the end of the 19th century, our lives have been greatly facilitated, but at the same time a huge amount of plastic waste has been produced. According to statistics, from 2004 to 2014, global plastic production increased by 38%. By 2016, the world's plastic production had reached 335 million tons.

A large part of these plastics become plastic waste, and there are two main ways to deal with plastic waste: dumping directly into the ocean, or simply and rudely landfilling.

According to reports, more than 200kg of plastic is poured into the ocean every second in the world. In marine garbage, plastic has become its main component, accounting for 60% to 80% of the proportion, and in some areas as high as 90% into more than.

The plastic waste that is landfilled will most likely end up in the ocean. Because it takes at least a hundred years for a plastic bag to degrade, they are broken into plastic fragments in the process, enter the groundwater system through the soil, and finally enter the ocean.

And these microplastics move around the world with ocean currents. From the coastlines of all continents to the South and North Pole, from the surface of the ocean to the depths of the ocean, and even in plankton, mussels, fish and birds, there are microplastics.

Previously, microplastics were found in marine organisms brought back by China's "Jiaolong" from a depth of 4,500 meters in the ocean.

In addition to plastic waste, there are many sources of microplastic pollution that we can't think of.

For example, toiletries, cosmetics.

Like toothpaste, facial cleanser, shower gel, lipstick, eyeliner, and sunscreen, many of them have added something called plastic microbeads to improve the cleaning and exfoliating effects.

Every time facial cleansers such as facial cleansers are used, 5,000 to 100,000 plastic microbeads are released into sewage. The diameter of these plastic microbeads is between 4 microns and 1 mm, which can easily escape the interception of sewage treatment plants and enter the ocean.

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