Overfishing and pollution continue to threaten marine resources and the livelihood of thousands of fishermen in the country as a weak surveillance network allows the owners of deep-sea trawlers to violate the relevant laws. According to sources, about 300 million gallons daily (MGD) of untreated industrial and municipal waste is thrown into the Arabian Sea. They say that the fish catch has dropped by 70 per cent due to the abuse of tidal trap nets.