This July 2019 video says about itself:
Sharks 101 | National Geographic
From the University of Exeter in Engeland, 22 July 2020:
Microplastics have been found in the guts of sharks that live near the seabed off the UK coast.
University of Exeter scientists studied four species of demersal (seabed-dwelling) shark.
Of the 46 sharks examined, 67% contained microplastics and other human-made fibres.
From James Cook University in Australia, 22 July 2020:
A massive global study of the world’s reefs has found sharks are ‘functionally extinct’ on nearly one in five of the reefs surveyed.
Professor Colin Simpfendorfer from James Cook University in Australia was one of the scientists who took part in the study, published today in Nature by the Global FinPrint organisation. He said of the 371 reefs surveyed in 58 countries, sharks were rarely seen on close to 20 percent of those reefs.