Over the past two decades, the Gulf of Maine has become a popular landing spot for invasive species from across the world, says Geoffrey Trussell, an evolutionary biologist and professor at ...

Two common snail species (Nucella lapillus and Littorina obtusata) have evolved in response to a major predator: the invasive ...

I don’t know what a shell does to a snail to make it lovable,’ says Jon. Slugs actually do have a shell, but it’s internal. Their shell has been reduced so much through evolution that in most species ...

"This ancestor probably had a hard shell ... along with clams, snails and slugs. "Mollusks have a high genetic diversity, which can be a challenge to understand their evolution, but probably ...