Bipalium is a genus of large predatory land planarians. They are often loosely called “hammerhead worms” or “broadhead planarians” because of the distinctive shape of their head region.
Hammerhead worms have no respiratory system, no circulatory system, no skeleton, and a mouth for an anus. Predatory and large, with some species capable of growing to half a meter long, hammerhead worms are a global menace. Native to the tropic and temperate zones of Asia and Australasia, hammerhead worms have invaded almost every corner of Europe and the United States.
A number of hammerhead worm species feed exclusively on earthworms, literally tearing them apart before dissolving them in enzymes and drinking them up.
Destroying native populations of earthworms wreaks havoc on native ecosystems.
Plume de Lynx 