Public domain: Introduction events' accounts (50 / 5528)
| Species |
Recipient region |
Date of the first record |
|
| Rhithropanopeus harrisii | Lithuania | 2001 |  |
| Rhithropanopeus harrisii | Netherlands | 1874 | |
| Rhithropanopeus harrisii | Poland | 1951 | |
| Rhithropanopeus harrisii | Portugal / Iberian Coastal | To 1978 | |
| Rhithropanopeus harrisii | Romania | From 1951 | |
| Rhithropanopeus harrisii | Russia / Azov Sea | 1950 | |
| Rhithropanopeus harrisii | Russia / Baltic Sea / Kaliningrad area | 1950 | |
| Rhithropanopeus harrisii | Spain / Iberian Coastal | To 1991 | |
| Rhithropanopeus harrisii | Sweden / Baltic Sea | 2014 | |
| Rhithropanopeus harrisii | Ukraine / Black Sea | 1937 - 1948 | |
| Rhithropanopeus harrisii | United Kingdom (Britain) / Celtic seas | 1996 | |
| Rhizogeton nudus | Iceland | To 2010 | |
| Rhizogeton nudus | Norway / Barents Sea | To 1998 | |
| Rhizogeton nudus | United Kingdom (Britain) / North Sea | To 2010 | |
| Rhizosolenia setigera | Bulgaria | 1987 | |
| Rhizosolenia setigera | Georgia | 1989 | |
| Rhizosolenia setigera | Romania | 1987 | |
| Rhodophysema georgei | France / Western Mediterranean | 1978 | |
| Rhodosoma turcicum | Israel | 2004 | |
| Rhopilema nomadica | Greece / Central Mediterranean | 2006 | |
| Rhopilema nomadica | Greece / Eastern Mediterranean | 2017 | |
| Rhopilema nomadica | Israel | 1976 | |
| Rhopilema nomadica | Italy / Central Mediterranean | 2015 | |
| Rhopilema nomadica | Italy / Western Mediterranean | 2015 | |
| Rhynchoconger trewavasae | Israel | 1987 | |
| Rissoina bertholleti | Israel | 1958 | |
| Rissoina spirata | Israel | 1997 | |
| Robertgurneya ecaudata | Ukraine / Black Sea | 1969 | |
| Robertgurneya rostrata | Turkey / Black Sea | 2009 | |
| Robertgurneya rostrata | Ukraine / Black Sea | From 1964 | |
| Ruditapes decussatus | Portugal / Azores | To 1900 | |
| Ruditapes philippinarum | Belgium | To 2006 | |
| Ruditapes philippinarum | France / Biscay Gulf | 1976 | |
| Ruditapes philippinarum | France / Celtic seas | 1979 | |
| Ruditapes philippinarum | France / English Channel | 1973 | |
| Ruditapes philippinarum | France / North Sea | 2009 | |
| Ruditapes philippinarum | France / Western Mediterranean | 1981 | |
| Ruditapes philippinarum | Germany / North Sea | 2016 | |
| Ruditapes philippinarum | Ireland | 1982 | |
| Ruditapes philippinarum | Italy / Adriatic Sea | 1983 | |
| Ruditapes philippinarum | Italy / Central Mediterranean | 1983 - 1990 | |
| Ruditapes philippinarum | Italy / Western Mediterranean | 1985 | |
| Ruditapes philippinarum | Netherlands | To 2008 | |
| Ruditapes philippinarum | Norway / North Sea | 1987 | |
| Ruditapes philippinarum | Norway / Norwegian Sea | 1987 | |
| Ruditapes philippinarum | Portugal / Iberian Coastal | To 1984 | |
| Ruditapes philippinarum | Romania | 1985 | |
| Ruditapes philippinarum | Russia / Black Sea | 1985 | |
| Ruditapes philippinarum | Spain / Iberian Coastal | To 2005 | |
| Ruditapes philippinarum | United Kingdom (Britain) / Celtic seas | 1980 | |
