Excess Fishing Capacity
There is enough fishing capacity to capture every food fish in the sea four times over. Overfishing follows as a natural consequence. Imagine if some enemy invaded your town with enough firepower to kill everyone four times over. What would your chances be of survival? Especially when they came through 7 times a year, year after year.
~ Roedy (1948-02-04 age:70) The End of the Line