The scientific name is caretta caretta. These turtles were listed as a threatened species in 1978 owing to destruction of its beach nesting habitat, harassment while nesting, over harvesting of its eggs, and by catch death from commercial fishing gear. These turtles prefer to live in coastal habitats, often inland bodies of water. They are primarily carnivores, eating jellyfish, conchs, crabs, and fish, but sometimes they eat seaweed and sargassum. Plastic can be mistaken as some of these foods, then getting stuck in the turtle and eventually killing it if the turtle doesn't get help. Or they could get stuck in any plastic containers, not getting out could be harmful or fatal. Matured females often return to the beach where they were born to hatch eggs. For daily activities turtles are known to eat and rest on and off.
Humans usually trade turtle shells, so the turtles would have to be killed and then have their shells cut off. That process usually only happens to Hawks bill turtles. but due to long line and trawl fishing 100-1000 turtles are captured each year. More than 200,000 Loggerhead sea turtles are killed and captured.
Over 100 million marine animals are killed from plastic debris in the ocean. If there is a floating plastic bag then turtles will be more likely to mistake it as a jellyfish because of the way it looks. They will eat it and either get sick or starve and die. Some plastic will also get caught around or inside a turtle. Slowly killing it or seriously harming it.