"Fish," he said, "I love you and respect you very much. But I will kill you dead before this day ends." The world's oceans are facing countless threats, and the importance of maintaining a healthy ocean environment is more significant than many may realize. Cooperation on all levels - international, national, and regional - is essential to conserve and sustain the world's marine habitats. More specifically, maintaining, conserving, and regenerating biodiversity in the world's oceans will rejuvenate the world's fish supply and therefore boost the world economy.  Over-fishing is one of the largest threats to ocean biodiversity today.  While many worldwide conventions, laws, codes of conduct, and management organizations are in place that help regulate, maintain, and sustain the fishing industry, they greatly lack in cooperation, uniformity, enforcement, and impact.  Part II will introduce the concept and importance of biodiversity and, specifically, the importance of healthy fish stocks. This is followed in Part III by a discussion of the need for world-wide regulation of the world's oceans in order to effectively protect biodiversity. The current, but ineffective, regulations are presented in Part IV, as well as commentary on their faults. Part V utilizes this background information to present a case study of the giant bluefin tuna, one of the world's most demanded fish. Finally, Part VI examines where the law should go from here in order to sustain and replenish the world's fisheries.  In short, "'[t]he oceans are suffering from a lot of things, but the one that overshadows everything else is fishing.'"