Primary strengths of the Division of Invertebrate Zoology include large holdings of Western Atlantic invertebrates represented not only by recently acquired specimens, but also by a strong historical component dating to the late 1800s, totaling approximately 3 million individuals, thousands of which are the type specimens of species new to science.

The Yale Peabody Museum’s collections are available to legitimate researchers for scholarly use. Loans are issued to responsible individuals at established institutions. Loans and access to the collection can be arranged through the Collections Manager.