Seventeen aquatic species and 15 terrestrial species are gravely endangered by a long list of threats including logging ... with the feds that requiring initial listing decisions for all 32 mollusks.

"We can now provide a clearer picture of the probable ancestor of all mollusks, from the garden snail to a deep-sea octopus," ...

All mollusks build their own shells, whether they live in water or on land. Creatures like snails, clams, oysters and mussels use an organ called a mantle to secrete layers of calcium carbonate ...