This map shows the estimated concentration of plastics in the ocean, along with major riverine sources of marine plastic waste. The size and brightness of each circle corresponds to the total mass of plastics measured within a 100,000 km2 hexagonal area of the ocean. The height of each orange spike represents the total mass of plastics deposited by a given river into the ocean each year. (Only the top 100 most-polluting rivers are shown.) Total mass of marine plastics per 100,000 km2 (2020) More plastic Less plastic Total mass of plastics deposited into ocean (2021) More plastic Less plastic Chapter 01: What Is the Geographic Approach? 19
RkJQdWJsaXNoZXIy MjA2NTE0Mw==