The International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC), comprised of 325 members from 86 countries, has a long history of resource sharing based on personal connections among its members. In 2002, IAMSLIC developed a resource-sharing system using a unified search interface that relies on Z39.50 broadcast search capabilities to query individual catalogs. In addition to the IAMSLIC Z39.50 Distributed Library, which searches standard OPAC catalogs, smaller libraries can share library holdings through the online Union List of Marine and Aquatic Serials. Member libraries may submit interlibrary loan requests for items located through either avenue. This successful program may serve as a model for other library organizations interested in sharing resources and extending access to subject-specific materials amongst member libraries.