While around 10% of all species depend on freshwater ... This is the group that not only contains snails, but also other invertebrates such as freshwater mussels and oysters.

Freshwater snails are one of the most imperiled groups of species in the United States. Already 67 species have gone extinct and more than 450 species — 64% of all freshwater snail species — are at ...

The two species of freshwater snail were once widespread throughout the Columbia Basin ... The snails are threatened by dams, agriculture, urbanization, logging and other threats. On top of all these ...

Some species can even grow up to 6 inches (15 cm) can, about the size of a baseball or human fist, making them one of the largest freshwater ... and release of all apple snails in 2012 to stop ...