 
 
 
| 12-7 Ambient Sea Water Quality (2005) | ||||
| (10 000 sq.km) | ||||
| Sea Area | ||||
| Clean | Lightly | Moderately | Heavily | |
| Area | Polluted Area | Polluted Area | Polluted Area | |
| National Total | 5.780 | 3.406 | 1.815 | 2.927 | 
| Bohai Sea | 0.899 | 0.624 | 0.291 | 0.175 | 
| Yellow Sea | 2.188 | 1.387 | 0.404 | 0.315 | 
| The East China Sea | 2.108 | 1.049 | 1.073 | 2.295 | 
| South China Sea | 0.585 | 0.346 | 0.047 | 0.142 |