Nick Upton / White-clawed crayfish (Austropotamobius pallipes) collected from a well-stocked stream being released at an ARK site stream, safe from Signal crayfish (Pacifastacus leniusculus) and Crayfish plague, E...

Nick Upton / Emma Settle of GWT disinfecting her boots before helping to release White-clawed crayfish (Austropotamobius pallipes) at an ARK site, safe from Signal crayfish (Pacifastacus leniusculus) and Crayfish...

Nick Upton / Large White-clawed crayfish (Austropotamobius pallipes) caught in a well stocked stream ahead of translocation to an ARK site, safe from Signal crayfish (Pacifastacus leniusculus) and Crayfish plague,...

Nick Upton / Large male White-clawed crayfish (Austropotamobius pallipes) with claspers visible under the tail, caught in a well stocked stream ahead of translocation to an ARK site, safe from Signal crayfish (Pac...

Nick Upton / GWT team processing White-clawed crayfish (Austropotamobius pallipes) in a well-stocked stream to check their size, sex and health ahead of translocation to an ARK site, safe from Signal crayfish (Pac...

Nick Upton / White-clawed crayfish (Austropotamobius pallipes) collected from a well-stocked stream in a bucket ready for release at an ARK site, safe from Signal crayfish (Pacifastacus leniusculus) and Crayfish p...

Nick Upton / White-clawed crayfish (Austropotamobius pallipes) found in shallow stream by GWT team for translocation to an ARK site, safe from Signal crayfish (Pacifastacus leniusculus) and Crayfish plague, Englan...

Nick Upton / Very small White-clawed crayfish (Austropotamobius pallipes) beside a much larger one caught in a well stocked stream, with the smaller one not large enough for translocation to an ARK site, safe from...

MYN / Lily Kumpe / Australian plague locust (Chortoicetes terminifera), Meekatharra Shire, Gascoyne Bioregion, Western Australia. meetyourneighbours.net project

MYN / John Tiddy / Grasshopper / Australian Plague locust (Chortoicetes terminifera) Victoria, Australia, March. meetyourneighbours.net project

Terry Whittaker / 2020VISION / Red deer (Cervus elaphus) and woman walking dog and talking on phone, Roehampton Flats in background, Richmond Park, London, UK, September. Did you know? Richmond Park was set up by King Charles I as...

Inaki Relanzon / Locust plague (Locusta migratoria capito) threatens crops in south Madagascar, June 2010