Overview of this "area of hypoxic [low-oxygen] ... waters at the mouth of the Mississippi River. The zone occurs between the inner and mid-continental shelf in the northern Gulf of Mexico, beginning at the Mississippi River delta and extending westward to the upper Texas coast." Discusses causes, effects on marine life and fishing industry, and related topics. Includes link collections for general reading, professionals, and educators. From the Science Education Resource Center (SERC), Carleton College.