The U.S. Fish and Wildlife Service finalized a rule that removes the requirement that shellfish have an external shell. Photo ...

Squid, cuttlefish, octopus and other cephalopods will now be included within the regulatory definition of shellfish.

An international team of experts has resolved long-standing questions about the evolutionary history of mollusks, one of the most diverse zoological groups on the planet. The study, published in ...

Mollusks are a highly diverse phylum (Mollusca) of invertebrate animals that constitute a major topic in zoology and evolutionary biology, encompassing classes such as Gastropoda, Bivalvia, and ...