As the evidence of continued overfishing shows, however, most of the owners have yet to find, or implement, the right policies.

While we had occasional disputes over trade in wheat and timber and over salmon-fishing rights, our friendship was broad and deep.

Once again, we tried to sidestep this inconvenience, asking if we could get fishing permits for the day, intending to slip off of the wall and disappear on our own.

Over-fishing also leads to fewer jobs, rises in the price of fish and can reduce an important source of revenue for developing countries.

Almost half of the world' s oceans have been seriously affected by over-fishing, pollution and climate change, according to a major study of man' s impact on marine life.