What happens to your plastic bags when you have finished with them?

Do you ever wonder what happens to your plastic bags when you have finished with them? Plastic bags are made from oil, a natural resource, which is why they take hundreds of years to decompose(break down and disintegrate).
Sea pollution is caused by rubbish which get carelessly dumped on road sides (to be taken to landfill sites) and then carelessly dumped in the sea which results in ocean currents carrying them to feeding grounds.
Pollution causes damage to lots of different sea creatures especially Leatherback turtles whose main source of food is Jellyfish. Unfortunately your plastic bags that you leave on the beach look identical to Jellyfish when they are in the water. This causes the turtles to mistakenly eat them and makes their stomach become blocked! and consequently they die of starvation. As a result by 2030 Leatherback turtles will become extinct!