By 2050 there will be more plastic than fish in our oceans.

Our blue planet is facing the biggest threat in human history. Trillions of pieces of plastic are choking the lifeblood of the earth and every marine animal, from the smallest plankton to the largest mammal, is being affected.

Wildlife biologist Liz Bonnin visits scientists at the cutting edge of plastics research to uncover whether we can turn back the growing plastic tide before it’s too late.