China's most advanced autonomous submarine, Qianlong III, has successfully made its first dive recently. It photographed a large number of photographs in the depths of more than 3,900 meters. There are fish and shrimps and starfish, sea cucumbers and other beautiful deep-sea creatures, and there are plastic garbage that people do not want to see. .
'These plastic wastes threaten the survival of marine life and destroy the marine ecosystem.' Dr. Sun Dong, chief scientist assistant of the B-wide navigation segment of the 'Ocean 1' ship researching marine biology for many years, said that plastic waste reaches the deep sea in a low-temperature and no light environment. In microbiological activity, it is extremely difficult to be naturally degraded.
Sun Dong said that the deep-sea ecosystem is dominated by the detritus food chain. There are a large number of starfish, sea cucumbers, and deep-sea fishes in the sea area. These deep-sea creatures swallow debris, and the broken plastic garbage is easily ingested by them and difficult to digest, thus harming them. Life Events.
Relevant statistics show that more than 8 million tons of plastics are abandoned every year in the world, accounting for 80% of marine debris. Marine plastic pollution is becoming an important environmental issue.
Large pieces of marine plastic waste are very garish, and plastic waste is broken down into small plastic particles by physical, chemical or biological action. The plastic fragments and particles with a diameter of less than 5 mm are called 'microplastics' and are 'in the ocean. PM2.5' has a tremendous impact on marine life. After feeding on marine organisms, it will affect its normal growth, development and reproduction, and ultimately destroy the ecological balance.
The sources of plastic waste on the seabed are either brought by land rivers and coastal land activities, or are discarded by people on and off the sea. Care for beautiful oceans must prevent plastic from entering the ocean.
Sun Dong said that to manage marine plastic waste, land sources should be managed properly, and excessive use of plastic products should be reduced. Garbage from rivers and rivers should be handled properly and prohibited from being thrown into the sea. At the same time, ships and their personnel should strictly enforce regulations governing ship wastes. Bring plastic waste back to the land for proper disposal and it is strictly forbidden to dispose of it into the sea. For marine microplastics pollution, relevant investigations and research should be vigorously carried out.