There are very few historical records of ocean plastic pollution, she said, so the researchers used the incidents to investigate exactly how much plastic pollution there was and how often these entanglements happened.
Ostle and her team looked at 60 years worth of ocean data covering over 6.5 million nautical miles in the North Atlantic and adjacent seas. They found that plastic entanglement on the equipment used to measure plankton increased by about 10 times from 2000 on.
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“We have known that plastic production has increased, and although there are a number of studies that have shown increased concentrations of plastic up to the 1990s, these studies have not been able to demonstrate the expected increase in plastics in open ocean surface waters,” Ostle said.
Source: The amount of plastic in the ocean is a lot worse than we thought, study says
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