Plastic is the seas’ major enemy. How is that so? Listen to Sarah Harvey talking about her work with an environmental organisation which helps to protect the seas from pollution (gap filling): https://engexam.info/cae-listening-practice-tests/cae-listening-practice-test-12/2/
The challenges of helping save the oceans are multifold, including ecotourism and protecting mangroves. These videos are really enlightening and a pleasure to watch and prove that protecting natural habitats can also help improve the standard of living of local communities.
And some other interesting videos are to be found here.
eoic1 