Lists of biodegradable materials present indexes of goods, equipment and substances that break down in nature. Most lists of biodegradable substances are available online through the websites of environmentally conscious organizations, such as the Biodegradable Products Institute and the Environmental Protection Agency.
Lists available online allow users to search for biodegradable materials in different ways, including by manufacturer, manufacturer's field, product type and product name. This variety affords users many opportunities to locate and compare materials. The EPA's website contains links to its own lists and research as well as lists compiled by other credible organizations. The Center for Microbial Oceanography: Research and Education website has a list of materials that aren't biodegradable along with the time it takes them to break down in a marine environment.