| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| United States (contiguous states) | Brewer South Freeport ME | 2003 - | absent | 84102 | |
| United States (contiguous states) | Hampton State Pier | 2003 - | absent | 84102 | |
| Canada | Maritimes, Bay of Fundy | - | rare | 11710 | |
| Canada | New Brunswick, NB | - | rare | 11710 | |
| Canada | Nova Scotia | - | rare | 11710 | |
| United States (contiguous states) | Port Harbor Marine | 2003 - | absent | 84102 | |
| United States (contiguous states) | Vineyard Sound, s. of Cape Cod | - | rare | 84099 |