The New Guinea Flatworm (Platydemus manokwari) is a predatory land flatworm species. They are native to New Guinea in the Pacific Ocean. While the original habitat was within tropical areas, they have been found in almost all temperate regions of the world. They eat a variety of invertebrates including land snails and land mollusks, and this has had a significant negative impact on the rare endemic land snail of some Pacific Islands. As a result they have been categorized as one of the 100 worst invasive species. Physically they are flat with both ends being pointed; they have a dark brown upper surface with a lighter central line and a pale gray underside.