Title 50 presents regulations governing the taking, possession, transportation, sale, purchase, barter, exportation and importation of wildlife and plants; wildlife refuges; wildlife research; fisheries conservation areas; fish and wildlife restoration; marine mammals; whaling; fisheries; tuna fisheries; and international fishing. Additions and revisions to this section of the code are posted annually by October. Publication follows within six months.

The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government.