Every year, 8 million tonnes of marine plastic are added. As if a truck dumps a full load of plastic into the sea every minute.
That is why the Ocean Conservancy organization has drawn up a top 5 with the worst plastic sinners in the sea.
1: Old fishing tackle© Shutterstock
Fishing wire, nets, traps and baskets are at the top of the list with the most dangerous plastic products.
For example, a seal can become so entangled in old nets that it can no longer come up to breathe air. The nets can also cut into the skin around its fins.
2: Plastic bags and cutlery© Shutterstock
Often sea turtles consider plastic bags in the sea for seaweed or jellyfish on the animals' menu.
The plastic bags can block the airways of the turtles and damage their digestive system.
3: Balloons© Helen Warren / WikiCommons
Large swarms of balloons that are released - it looks beautiful, but often they end their journey into the sea.
Marine animals can ingest the balloons or become entangled in the rope attached to them.
4: Cigarette butts© Shutterstock
Smokers worldwide throw away an estimated 4 trillion cigarette butts.
The cigarette filters often contain the plastic fiber cellulose acetate, and because of their small size fish and other animals swallow the butts easily.
5: Plastic caps© Chris Jordan / Creative Commons
The caps of plastic bottles are so small that many marine animals can get them.
If they wash ashore on the coast, seagulls can also regard them as food. The caps can, among other things, block digestion.