| Ocean Primary Production in China Shelf Sea Estimated with SeaWiFS and MODIS Recent countries visiting this post |  |
 | 4 | United States |
 | 1 | |
 | 1 | Russian Federation |
| Ocean Primary Production in China Shelf Sea Estimated with SeaWiFS and MODIS Recent countries visiting this post | |
| 4 | United States |
| 1 | |
| 1 | Russian Federation |