Three US States Invaded by New Species of Flatworm Published Sep 24, 2024 at 7:00 AM EDT Updated Sep 24, 2024 at 1:19 PM EDT By Jess Thomson ...

A ravenous flatworm is such a dangerous predator that it can even attack and kill a spider perched on its web, a first-of-its-kind observation shows. In February 2014, João Cardoso – now at the ...

The "template" flatworm, G. dorotocephala, can be seen in the top left. The rest of the top row shows the worms whose heads were grown onto the template worm. The bottom row shows the results.

The New Guinea flatworm is about two inches long. It has a black body with a pale stripe down its back, looking a bit “like a little cartoon,” according to North Carolina State University ...

To see how the flatworm uses its toxic arsenal, Ritson-Williams offered it various mollusks. The flatworm killed at least 30 species, including ones with trapdoors that block out most danger.

The earliest observation came from a VHS tape made in 1999; a family had filmed hammerhead flatworms and held on to the video for nearly two decades because the creatures were just so strange.