Public domain: Introduction events' accounts (50 / 5516)
| Species |
Recipient region |
Date of the first record |
|
| Platorchestia platensis | Sweden / North Sea | To 1940 |  |
| Platycephalus armatus | Spain / Canary Islands | To 2015 | |
| Platycephalus indicus | Israel | 1953 | |
| Platysiphonia caribaea | Spain / Canary Islands | 1980 - 1989 | |
| Plecoglossus altivelis altivelis | Ukraine / Azov Sea | 1960 - 1979 | |
| Plecoglossus altivelis altivelis | Ukraine / Black Sea | 1963 - 1979 | |
| Pleopis polyphaemoides | Russia / Caspian Sea | 1957 | |
| Pleurobranchus forskalii | Israel | 1975 | |
| Pleurosigma planctonicum | France / Celtic seas | 1966 | |
| Pleurosigma simonsenii | France / Celtic seas | 1966 | |
| Pleurosigma simonsenii | France / English Channel | 1966 | |
| Pleurosigma simonsenii | France / North Sea | 1966 | |
| Pleurosigma simonsenii | Germany / North Sea | To 2020 | |
| Pleurosigma simonsenii | Netherlands | 1974 | |
| Pleurosigma simonsenii | United Kingdom (Britain) / English Channel | To 1972 | |
| Plocamium secundatum | Italy / Central Mediterranean | 1991 | |
| Plocamopherus ocellatus | Israel | 1977 | |
| Plotosus lineatus | Israel | 2001 | |
| Plumatella casmiana | Germany / Baltic Sea | To 1886 | |
| Plumatella casmiana | Germany / North Sea | To 1995 | |
| Plumularia obliqua | Australia / Bass strait | 1884 | |
| Plumularia setacea | Australia / Bass strait | 1885 | |
| Podon intermedius | Russia / Caspian Sea | 1985 | |
| Poecilia reticulata | Germany / North Sea | 1980 - 1989 | |
| Poecilia reticulata | Netherlands | To 1985 | |
| Pollia dorbignyi | Portugal / Azores | To 1998 | |
| Pollicipes pollicipes | Ireland | 1820 - 1856 | |
| Polyandrocarpa zorritensis | Italy / Central Mediterranean | 2001 | |
| Polyandrocarpa zorritensis | Italy / Western Mediterranean | 1974 | |
| Polyandrocarpa zorritensis | Portugal / Madeira | 2014 | |
| Polycera hedgpethi | Australia / Bass strait | To 1989 | |
| Polycera hedgpethi | Italy / Adriatic Sea | 2009 | |
| Polycera hedgpethi | Italy / Central Mediterranean | 2012 | |
| Polycera hedgpethi | Italy / Western Mediterranean | 1986 | |
| Polycera hedgpethi | Spain / Iberian Coastal | 2002 | |
| Polycerella emertoni | Greece / Central Mediterranean | 1995 | |
| Polycerella emertoni | Italy / Western Mediterranean | 1964 | |
| Polycirrus twisti | Greece / Central Mediterranean | 2010 | |
| Polycirrus twisti | Greece / Eastern Mediterranean | 1983 | |
| Polyclinum aurantium | Portugal / Azores | To 1971 | |
| Polyclinum constellatum | Italy / Central Mediterranean | 2018 | |
| Polydora aggregata | Denmark / Baltic Sea | 2017 | |
| Polydora ciliata | France / Celtic seas | 1921 | |
| Polydora ciliata | France / English Channel | 1921 | |
| Polydora colonia | France / Biscay Gulf | 2021 | |
| Polydora colonia | Italy / Adriatic Sea | 2009 | |
| Polydora cornuta | Bulgaria | 1962 | |
| Polydora cornuta | Denmark / Baltic Sea | 1943 | |
| Polydora cornuta | Denmark / North Sea | 1941 | |
| Polydora cornuta | Greece / Eastern Mediterranean | 2008 | |
