Giant African land snails, like this one found in Florida in 2011, eat almost any plant. Florida officials are determined to eradicate the invasive pest. Andrew Derksen/Florida Department of Agriculture/Reuters/Landov hide caption

itoggle caption Andrew Derksen/Florida Department of Agriculture/Reuters/Landov

A specimen of Platydemus manokwari collected in a greenhouse at Caen in Normandy. You can see its white pharynx protruding from the underside, ingesting soft tissues of a specimen of the Mediterranean snail. Pierre Gros/PeerJ hide caption

itoggle caption Pierre Gros/PeerJ