Platydemus manokwari, also known as the New Guinea flatworm, is a large predatory land flatworm that has become an invasive species in many countries. Native to New Guinea, it was accidentally introduced to the soil of many countries. It was also deliberately introduced into two Pacific islands in an attempt to control an invasion of the Giant East African Snail. It eats a variety of invertebrates including land snails, and has had a significant negative impact on the rare endemic land snail fauna of some Pacific islands. It has become established in a wide variety of habitats. It was recorded in 2014 from a hothouse in Caen, France, its first finding in Europe, and in 2015 from New Caledonia, Wallis and Futuna Islands, Singapore, Solomon Islands, Puerto Rico (first record in the Caribbean), and Florida, USA. More recently, it was recorded from mainland Asia, in Thailand in 2018 and Hong-Kong in 2019. The researchers said that "while most of the infected territories reported until now were islands, the newly reported presence of the species in mainland US in Florida should be considered a potential major threat to the whole US and even the Americas". Islands invaded Platydemus manokwari has been introduced to several tropical and subtropical islands such as Micronesia; the Marquesas; the Society Islands; Samoa; Melanesia; and the Hawaiian Islands. These islands often harbor endemic radiations of rare and endangered snail species, which are a primary source of nutrition for P. manokwari. P. manokwari has also been introduced to several Japanese Islands. In the Caribbean, it was recorded in 2015 from Puerto Rico, in 2020 from Guadeloupe, and in 2021 from Martinique and Saint Martin. Methods and purpose of introduction Although native to New Guinea, P. manokwari has been found in many tropical and temperate regions of the world. There are several methods by which P. manokwari has been introduced to these areas. Some methods are accidental. One such is the sale of tropical plants and potting soil that contains P. manokwari. Another method of accidental introduction occurs through the movement of machinery and equipment. P. manokwari are often found in the leftover soil on the construction equipment and when the soil is transferred, P. manokwari is also transported. P. manokwari can also be transferred to new areas through the accidental transfer of seed material used to restore vegetation. P. manokwari has also sometimes been introduced intentionally, as a