| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| Alaska | Chukchi Sea | 1999 - 1999 | common | 118566 | |
| Alaska | Chukchi Sea | 2000 - 2000 | common | 118566 | |
| Canada | Western Hudson | 2013 - 2013 | rare | 123259 | |
| Canada | Western Hudson Bay | 1995 - 1995 | extremely abundant | 123259 | |
| Canada | Western Hudson Bay | 1996 - 1996 | abundant | 123259 | |
| Canada | Western Hudson Bay | 1997 - 1997 | very common | 123259 | |
| Canada | Western Hudson Bay | 1999 - 1999 | common | 123259 | |
| Canada | Western Hudson Bay | 2000 - 2000 | very common | 123259 | |
| Canada | Western Hudson Bay | 2007 - 2007 | abundant | 123259 | |
| Canada | Western Hudson Bay | 2008 - 2008 | common | 123259 | |
| Canada | Western Hudson Bay | 2009 - 2009 | rare | 123259 | |
| Canada | Western Hudson Bay | 2010 - 2010 | very common | 123259 |