Why, what a sad question :(
-Turtles are particularly badly affected by plastic pollution, and all seven of the world's turtle species are already either endangered or threatened for a number of reasons, one of them being plastics. Many sea turtles have been found dead with plastic bags in their stomachs. Turtles mistake floating transparent plastic bags for jellyfish and eat them. In one dead turtle found off Hawaii in the Pacific more than 1000 pieces of plastic were found in the stomach.
-A recent US report concluded that more than 100000 marine mammals die each year in the world's oceans by eating or becoming entangled in plastic rubbish, and the position is worsening.
-According to Greenpeace, more than 1 million birds and 100,000 marine mammals are estimated to perish each year by either eating or becoming trapped in plastic waste.
I copied that of this site: http://www.copperwiki.org/index.php/Plastic_bags
so sad, huh?