| Species |
Recipient region |
Date of the first record |
|
| Pseudopolydora paucibranchiata | Netherlands | To 2015 |  |
| Pseudopolydora paucibranchiata | Norway / North Sea | To 1979 | |
| Pseudopolydora paucibranchiata | Norway / Norwegian Sea | To 1991 | |
| Pseudopolydora paucibranchiata | Portugal / Iberian Coastal | 2005 | |
| Pseudopolydora paucibranchiata | Spain / Iberian Coastal | To 2011 | |
| Pseudopolydora paucibranchiata | United Kingdom (Britain) / Celtic seas | To 1960 | |
| Pseudorhaphitoma iodolabiata | Israel | 2010 | |
| Pseudosolenia calcar-avis | Bulgaria | 1926 | |
| Pseudosolenia calcar-avis | Denmark / Baltic Sea | 2009 | |
| Pseudosolenia calcar-avis | Denmark / North Sea | 2009 | |
| Pseudosolenia calcar-avis | Georgia | 1993 | |
| Pseudosolenia calcar-avis | Germany / Baltic Sea | To 2010 | |
| Pseudosolenia calcar-avis | Romania | 1900 - 1909 | |
| Pseudosolenia calcar-avis | Russia / Black Sea | 1926 | |
| Pseudosolenia calcar-avis | Russia / Caspian Sea | 1934 | |
| Pseudosolenia calcar-avis | Turkey / Black Sea | 1996 | |
| Pseudosolenia calcar-avis | Ukraine / Azov Sea | From 1924 | |
| Pseudosolenia calcar-avis | Ukraine / Black Sea | From 1924 | |
| Psiloteredo megotara | Belgium | To 1600 | |
| Psiloteredo megotara | Denmark / Baltic Sea | To 1944 | |
| Psiloteredo megotara | Denmark / North Sea | To 1937 | |
| Psiloteredo megotara | France / English Channel | To 1600 | |
| Psiloteredo megotara | France / North Sea | To 1600 | |
| Psiloteredo megotara | Germany / North Sea | To 1937 | |
| Psiloteredo megotara | Netherlands | To 1912 | |
| Psiloteredo megotara | Norway / North Sea | To 1962 | |
| Psiloteredo megotara | Norway / Norwegian Sea | To 1949 | |
| Psiloteredo megotara | Portugal / Azores | To 1940 | |
| Psiloteredo megotara | Portugal / Madeira | To 1940 | |
| Psiloteredo megotara | Sweden / North Sea | To 1977 | |
| Psiloteredo megotara | United Kingdom (Britain) / English Channel | To 1967 | |
| Psiloteredo megotara | United Kingdom (Britain) / North Sea / Orkney Islands | 1950 - 1955 | |
| Pteragogus trispilus | Greece / Central Mediterranean | 2008 - 2009 | |
| Pteragogus trispilus | Greece / Eastern Mediterranean | 1992 | |
| Pteragogus trispilus | Israel | 1991 | |
| Pteria hirundo | Romania | 2002 | |
| Pterocladiella capillacea | Australia / Bass strait | 1966 | |
| Pterocladiella melanoidea | Turkey / Black Sea | 1990 - 1999 | |
| Pterois miles | Greece / Central Mediterranean | 2018 | |
| Pterois miles | Greece / Eastern Mediterranean | 2009 | |
| Pterois miles | Israel | 1991 | |
| Pterois miles | Italy / Central Mediterranean | 2016 | |
| Pterosiphonia pinnulata | France / Biscay Gulf | 1993 | |
| Pterosiphonia pinnulata | France / English Channel | 1993 | |
| Pterosiphonia pinnulata | Portugal / Azores | 2005 - 2007 | |
| Pterosiphonia pinnulata | United Kingdom (Britain) / Celtic seas | | |
| Pterosiphonia pinnulata | United Kingdom (Britain) / English Channel | | |
| Pterosiphonia tanakae | France / Biscay Gulf | 2005 | |
| Pterosiphonia tanakae | France / English Channel | 2008 | |
| Pterosperma cristatum | Romania | 1970 | |
