# | Species | Year | Period | From - To | Reason | Established in the wild | Ref. no. |
1 | Elminius modestus | 19th century | Australia - Chichester Harbour. | biofouling | yes | 001314 | |
2 | Elminius modestus | 19th century | New Zealand - Chichester Harbour. | biofouling | yes | 001314 | |
3 | Monocorophium sextonae | 19th century | New Zealand. - Plymouth | unknown | probably yes | 001314 | |
4 | Ostrea lutaria | 1963 | 1950-1974 | New Zealand - Wales | fill ecological niche | Unknown | 007794 |