Illegal fishing, overfishing and pollution are common problems in the waters of South America.For instance, Ecuadoran small-scale fishing captures at least 250,000 sharks every year, most of them apparently illegally, and 62 percent of Chile’s fisheries are overexploited or depleted.But the overarching problem, the one that enables the rest, is weak governance, according to experts.This article encapsulates a series of stories by Mongabay Latam examining the state of the sea in Chile, Peru, Colombia and Ecuador. Illegal fishing, overfishing and pollution are common problems in the waters of South America. But the overarching problem, the one that enables the rest, is weak governance, according to experts. This is so even for countries whose territories are mostly ocean. Chile, for example, is 70 percent seawater, and Ecuador has five times more territorial waters than lands. The depletion of fish stocks and other marine resources is probably the main reason why, in recent years, governments have begun trying, with variable success, to control, oversee and monitor a situation that many experts say has gotten out of hand.