As an asset of tremendousenvironmental, recreational, andeconomic importance, this Nation's fishand wildlife resources represent a vitalpart of our natural heritage - one that isfacing increasing pressures every day.For this reason, the mission of the U.S.Fish and Wildlife Service (Service) growsmore complex and critical every day. Asthe Service continues to look for new andbetter ways to conserve, protect, andenhance fish and wildlife and theirhabitat, its major responsibilities remainfocused on migratory birds, endangeredspecies, certain marine mammals, andfreshwater and anadromous fish.