The sea is full of pollutants including plastics, chemicals, oil, raw sewage, radioactive waste, explosives.
Every single square metre of ocean which has been surveyed now contains plastic. Plastic has been found in the deepest ocean trench; that’s at a depth of 36,000 feet. There are estimated to be over 5 trillion pieces of plastic, including micro-plastics in the oceans and seas.
The amount of plastic produced is expected to double by 2050. Most of this is single-use.
Plastics have entered food chains with unknown effects.