What percentage of landbased pollution ends up in the ocean?

Question

(for example: bottles, pastic cups, cans, etc)

Answer 1

About 20 percent of the land based petroleum entering North American coastal waters ends up in the Gulf of Mexico

Everything ends up in the ocean. ... 80 percent of pollution to the marine environment comes from land-based sources

Eighty percent of marine pollution comes from land-based sources, ... 24000 metric tons of plastic packaging ends up in the Atlantic Ocean every year.