Answer:
Join ocean clean-up efforts and educate people about pollution.
Step-by-step explanation:
One of the best ways to clean up our oceans is not by actually cleaning them. This sounds counterintuitive but realistically pollution is being added to our oceans faster than we can physically take it out. So what do we do? Education is, if not the best, one of the best ways to change the state of our beaches. By educating a population of people, say even a generation, policies that limit pollution are more likely to be passed with a bigger amount of support.
Don't get me wrong, cleaning up your beaches are great but if you want to make a lasting difference you will have to change the mindset of others, especially the people doing the polluting.