Florida scientists have found human-made pollutants in the blubber of whales and dolphins – however these were not the main cause of the animals becoming stranded.
About 500 whales and dolphins strand themselves every year – no one knows exactly why, although theories abound.
Researchers found a wide range of substances- PCB, DDT, NPE ( found in food packaging).
( source and full article- https://www.insidescience.org/news/research-shows-range-contaminants-blubber-whales-and-dolphins )
*** A future blog will look at whale strandings
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