List of non-marine molluscs of Great Britain

Great Britain is a European island in the northeastern Atlantic, comprising the contiguous countries of England, Scotland and Wales.

[7] A major revision of the slug fauna published in 2014, partly based on genetic sequencing, established that there were 20% more species than had previously been recognised.

Also not included are species such as Eobania vermiculata[11] and Milax nigricans[10] that have been found outdoors on single occasions but seem never to have established persisting populations.

[citation needed] Some species are protected in the United Kingdom under the Wildlife and Countryside Act 1981:[12] Two of the land snails on the list (Fruticicola fruticum and Cernuella neglecta) are now locally extinct (in Great Britain, sometimes abbreviated here as G.B.

An attempt has been made to label the families as aquatic, terrestrial or intermediate, and an indication is given where it is thought that the species is introduced.

Species are considered to be native, unless otherwise indicated on the list; this information is taken from Kerney (1999)[13] updated in the case of slugs with the opinions of Rowson et al.

The following gastropods are pulmonates: This group of exotic land and freshwater species are not truly part of the fauna because they do not live in the wild.