How pollution affects Leatherback turtles?

What happens to our plastic bags after we have carelessly dumped them by the roadside?
Bags left on beaches end up in our sea which causes marine pollution (trouble for sea life and creatures). Plastic bags are made from oil, which is a natural resource, therefore they take years to decompose (break down and disintegrate).
How does this affect Leather back turtles? Turtles eat the bags because they think they are their food because plastic bags look like jellyfish in the water. If the turtles stomach becomes blocked with plastic bags it results in the turtles starving
to death. If this continues Leather back turtles will be extinct (all died out) by 2030!

Plastic Soup @ NMA

Yesturday we went to the national marine aquarium. We visited the Science Lab and and did two experimants. We had to pick a card to see which sea animals stomach we had to look inside. We had to make a list of thing we thought would be in the stomach of the giant trevally. Here are some exsamples; blood, bones, gutts, flesh and fat and here are the foods we thought of; shrimp, plankton, plaice, crabs and eel. These are the actual things that we found in it; 2 squid, lots of small peices of plastic, 3 small fish, 4 lollisticks, 1 penlid, 2 pieces of rope, 3 bottletops and 5 pieces of wood. We had a look at some sad pictures of loads of plastic in the sea and loads of dead fish and birds. We also learnt some symbols on plastic packaging and on our sheet we had to link the symbols with the text. These are the symbols that we we had to figure out what they looked liked; The Green Dot, Plastics, Mobius Loop and Mobius Loop with percentage.