Sage Szkabarnicki-Stuart, Deroceras laeve, 2020

Thanks to the global trade in plants and other horticulture materials, the Marsh Slug (Deroceras laeve) has evolved into two distinct organisms: the wild form and the greenhouse form. Scientists believe that the greenhouse form is widespread in artificial environments across the world. The species is native to Canada and most of the United States, but is now found on every continent except Antarctica.