The oceans fisheries are in trouble due to overfishing, pollution and habitat loss.
Some fisheries are so overexploited and polluted that they are nearing biological extinction.
In the early 1800's upon settling North America, settlers found a seemingly endless supply of buffalo in the great plain. Not until they drove the buffalo resources to near extinction did they realize that they were not limitless. This is the case with our oceans resources, however because of the vastness of these fisheries, it is easy to be skeptical of its decline. We cannot rely on a visual appearance of decline, we must rely on our declining numbers in the fish harvest data. Environmentalists believe that the world's over exploitation and ailing oceans will someday replace tropical rain forests as the next global ecology concern.