Oceans need to be managed sustainably in order to conserve our fragile marine ecosystems.
Although oceans are essential to us in many ways, the state of marine biodiversity remains little known. What we do know, however, is that human activities create a number of pressures such as (over-)exploitation, carbon emissions, and pollution, including marine litter.
It is estimated that there are over 150 million tonnes of plastic in the world's seas and that, without significant action, there may be more plastic than fish (by weight) in the sea by 2050. Some marine litter consists of microplastics; these originate from the breaking down of larger plastic pieces or are released directly into the environment.