| Year / Period | From | To | Established | Ecological effects |
|---|---|---|---|---|
| unknown | Pacific, Northwest | Bulgaria | yes | unknown |
| unknown | Pacific, Northwest | Georgia | yes | unknown |
| unknown | Pacific, Northwest | Romania | yes | unknown |
| unknown | Pacific, Northwest | Russian Federation | yes | unknown |
| unknown | Pacific, Northwest | Turkey | yes | unknown |
| unknown | Pacific, Northwest | Ukraine | yes | unknown |
| 2004 - 2006 | unknown | Samborombón Bay | ||
| 1990 - 2009 | unknown | Maldonado Bay | yes | |
| 1947 | Pacific, Northwest | Bulgaria (Black Sea) | yes | probably yes |
| 1947 | Pacific, Northwest | Georgia (Black Sea) | yes | probably yes |
| 1947 | Pacific, Northwest | Romania (Black Sea) | yes | probably yes |
| 1947 | Pacific, Northwest | Russian Federation (Black Sea) | yes | probably yes |
| 1947 | Pacific, Northwest | Turkey (Black Sea) | yes | probably yes |
| 1947 | Pacific, Northwest | Ukraine (Black Sea) | yes | probably yes |
| 1974 | Pacific, Northwest | Greece | yes | unknown |
| 1974 | Pacific, Northwest | Italy | yes | unknown |
| 1983 | Japan | Gulf of Triste | yes | |
| 1997 | Adriatic Sea | Coast of Brittany | ||
| 1998 | Pacific, Northwest | United States of America | yes | unknown |
| 2002 | unknown | Mikhmoret Beach | ||
| 2005 | unspecified | Netherlands, Dutch North Sea | unknown | |
| 2007 | Not specified | Ría de Arousa | ||
| 2011 | unknown | Spille |