Public domain: Introduction events' accounts (50 / 5528)
| Species |
Recipient region |
Date of the first record |
|
| Petricolaria pholadiformis | France / North Sea | 1972 |  |
| Petricolaria pholadiformis | Germany / Baltic Sea | 1927 | |
| Petricolaria pholadiformis | Germany / North Sea | 1896 | |
| Petricolaria pholadiformis | Greece / Eastern Mediterranean | 1985 | |
| Petricolaria pholadiformis | Netherlands | To 1899 | |
| Petricolaria pholadiformis | Norway / North Sea | To 1955 | |
| Petricolaria pholadiformis | Spain / Iberian Coastal | To 2007 | |
| Petricolaria pholadiformis | Sweden / North Sea | 1931 - 1944 | |
| Petricolaria pholadiformis | United Kingdom (Britain) / English Channel | 1893 | |
| Petricolaria pholadiformis | United Kingdom (Britain) / North Sea | 1893 | |
| Petroscirtes ancylodon | Greece / Eastern Mediterranean | 2004 | |
| Petroscirtes ancylodon | Israel | 1988 | |
| Petrospongium rugosum | Australia / Bass strait | 1971 | |
| Peyssonnelia conchicola | Australia / Bass strait | 1981 | |
| Peyssonnelia rosa-marina | Turkey / Black Sea | 2000 - 2009 | |
| Pfiesteria piscicida | Norway / North Sea | 2000 | |
| Pfiesteria shumwayae | Norway / North Sea | 2000 | |
| Phaenna spinifera | Romania | 1978 | |
| Phaeocystis pouchetii | Bulgaria | 1989 - 1990 | |
| Phaeocystis pouchetii | Denmark / Baltic Sea | 1980 | |
| Phaeocystis pouchetii | Denmark / North Sea | 1980 | |
| Phaeocystis pouchetii | Greece / Eastern Mediterranean | 1983 | |
| Phaeocystis pouchetii | Romania | 1990 - 1999 | |
| Phaeocystis pouchetii | Russia / Black Sea | 2006 | |
| Phaeocystis pouchetii | Sweden / Baltic Sea | To 1980 | |
| Phaeocystis pouchetii | Ukraine / Black Sea | 1990 | |
| Phallusia mammillata | France / English Channel | To 1900 | |
| Phallusia mammillata | France / North Sea | To 1900 | |
| Phallusia mammillata | Ireland | 1890 - 1920 | |
| Phallusia mammillata | Portugal / Madeira | 1992 - 1995 | |
| Phallusia nigra | Greece / Central Mediterranean | 2015 | |
| Phallusia nigra | Greece / Eastern Mediterranean | 2008 | |
| Phallusia nigra | Israel | 1952 | |
| Pherusella brevituba | Italy / Western Mediterranean | 1996 | |
| Phialella quadrata | Australia / Bass strait | 1915 | |
| Phidiana militaris | Israel | 2016 | |
| Philinopsis speciosa | Israel | 2009 | |
| Phorbas tenacior | Australia / Bass strait | 1989 | |
| Phorcus lineatus | Netherlands | To 1985 | |
| Photis lamellifera | Israel | To 1959 | |
| Photis lamellifera | Italy / Central Mediterranean | 1990 | |
| Phrix spatulata | Greece / Central Mediterranean | 2009 | |
| Phyllodicola petiti | United Kingdom (Britain) / Celtic seas | 1989 | |
| Phyllodoce groenlandica | Spain / Iberian Coastal | To 2016 | |
| Phyllodoce longifrons | Israel | 1972 | |
| Phyllopodopsyllus bradyi | Ukraine / Black Sea | 1969 | |
| Phyllorhiza punctata | Greece / Central Mediterranean | 2005 | |
| Phyllorhiza punctata | Israel | 1965 | |
| Phyllorhiza punctata | Italy / Western Mediterranean | 2009 | |
| Physa sp. | United Kingdom (Britain) / Celtic seas / Channel Islands | | |
