Yes, the problem of garbage in the ocean is huge. Local residents on almost all islands are accustomed to using the ocean. I saw this in the Far East, in Oceania, in Asia, in the Caribbean islands. Everywhere the same thing ((
Tourists also often do not care about the preservation of nature. Of the exceptions, I heard only about Easter Island. There, everyone who flew to the island is obliged to take everything he brought from him. Including garbage.

But even accidentally carried away by the wind plastic bags, can cause great harm (