For many years, important fisheries have existed for the albacore tuna in the Atlantic and Pacific Oceans. As efforts to catch fish have increased, the world catch of albacore tuna has been gradually declining and many stocks are now over-fished, or fully exploited and nearing a situation of over-fishing (2) (5). The North Atlantic stock has declined to about one quarter of the peak levels estimated for the 1940s, and likewise, the South Atlantic stock has been reduced by fisheries to about 25 percent of its un-fished level (7). While there are regulations regarding the amount of albacore tuna that can be caught in many areas, enforcing such fishing laws can be challenging as the boats operate on the high seas far from observation (8).
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