Search is on for the German hairy snail in London

Conchologists, and citizen scientists team up to seek out endangered mollusc species along River Thames

It is tiny, hairy and German" - and it could be hiding underneath a piece of driftwood near you. Citizen scientists and expert conchologists are teaming up to conduct the first London-wide search for one of Britain's most endangered molluscs.

The fingernail-sized German hairy snail (Pseudotrichia rubiginosa) is found in fragmented patches of habitat mostly along the tidal Thames.