Flatworm (Platyhelminthes) field guide


Flatworms (phylum Platyhelminthes) Flatworms are found in marine, freshwater, and even damp terrestrial environments. Most are free-living forms, but many are parasitic on other animals.

https://en.wikipedia.org/wiki/Flatworm

1,898,437 sightings of 21,107 species in 9,314 locations from 12,954 contributors
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