A team of five exhausted fishermen has just returned from a three-day tiring journey of the Arabian Sea. After anchoring their wobbly 30-foot boat at the fishing jetty of Karachi’s historical fishing settlement, Ibrahim Hyderi, they start unloading nets and emptying the plastic baskets. Finally they pile up their catch, which comprises small fish. The three nights of labour will earn each fisherman Rs3,000, as only fish meal factories will buy it for less than the market rate.

“There are no fish near the shores and we have to travel into open sea to find the catch,” says Abass Mallah, the 40-year-old captain of the boat.

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The residents in this oldest fishing village are running out of luck as they have to find ways to survive with the growing pollution from Pakistan’s largest city. These days they need powerful motorboats, bigger fishing nets and extra men to sail into the open sea and spend several days in search of fish.

“Dumping of garbage and pouring sewerage water into sea has badly affected fish,” says Saleh Muhammad, a fisherman from the village.

Just a few yards away from the fishing jetty, heaps of rubbish have been dumped on the beach. According to locals, influential people have started inviting rubbish trucks to come and dump municipal waste into the sea. They hope then to lay claim to the adjacent land, and sell it at a large price.

Just outside the village, there is a huge drain. It pours forth smoky black water, layered with white foam, into the sea. This effluent comes from the city. There are six industrial zones in Karachi with around 10,000 industrial units that manufacture everything from textiles to chemicals and paints. The most polluting, in terms of chemical waste, are the tanneries.

The authorities admit that solid waste and toxic industrial effluents are dumped into sea, untreated. Sindh Minister for Environment, Sikandar Mandhro, says that he is aware that the wastewater and solid waste is dumped into the sea. “This is not new phenomena, we have chalked out a plan to solve the issue on a permanent basis,” he said.

Authorities estimate that Karachi produces around 500 million gallons per day (MGD) of wastewater. Around one fifth of water comes from these industries, while the rest is the domestic or municipal sewerage. “Almost the entire sewerage and industrial waste water goes into sea without treatment, which has brought a natural disaster, as we are losing our fish catch and also it is affecting marine life. We are working to resolve the issue,” admits Mandhro.

According to the law, the owners of industrial units are responsible for treating industrial waste and disposing of the wastewater properly without harming the environment. “There was no law to punish the polluters in the past, but now we have introduced new laws and will soon ensure that every industry treats its waste,” says Mandhro.

However, factory owners have different ideas. “Most of the industries were built five or six decades ago and now they have no space to build treatment plants inside the factories,” says Syed Sadiq Ahmed, an owner of a small factory in Korangi Industrial area. He says the government has a plan to treat the industrial wastewater but nothing yet has been done. “A huge treatment plant was started in Korangi Industrial area, but is no longer functional,” he adds.

There are no designated landfill sites in Karachi, therefore the rubbish or solid waste, which includes plastic, is thrown directly into the sea or dumped in rainwater steams or nullahs and ultimately are washed into the sea after monsoon floods.According to data collected by the Sindh Environmental Protection Agency (Sepa), there is also the waste from, the huge local cattle colony, which houses around a million animals, a mix of cows and buffaloes. The waste produced by them is also dumped in the sea.

Pakistan’s only two functional ports – Karachi Port and Bin Qasim Port – are also located on these shores, which also contribute to the pollution. The Karachi Port Trust (KPT) authorities claim that they are working day and night to keep the sea clean, but the Pakistan Game Fish Association has termed the port as, “possibly the most polluted port in the world”. Oil spills from the ships in the vicinity are common, and the Tasman Spirit oil spill in 2003, was one of the world’s worst. The Greek oil tanker carrying 67,500 tonnes of crude oil broke ran aground near the Karachi port, killing thousands of fish and birds in the area. The impacts of the spill still linger.

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Ecologists are worried about the increasing marine pollution. Nadeem Mirbahar, a renowned ecologist and coordinator at the International Union for Conservation of Nature and Natural Resources (IUCN) Pakistan, says pollution has badly affected the fish catch and marine life. “Along the Karachi coast, locals sometimes find corpses of endangered green turtles and other cetaceans, which died because of the pollution, especially due to throwing of plastic waste into the sea,” says Mirbahar. He further adds that several species of fish have disappeared from the waters of Arabian Sea due to pouring of industrial waste.

This article originally appeared on thethirdpole.net