KARACHI: A large volume of industrial waste and garbage was flushed into the sea in the wake of the monsoon rains and urban flooding in Karachi last week, environmentalists and fisherfolk said on Tuesday.

The downpours paralyzed Pakistan’s largest city, killing 17 people and renewing scrutiny of the city’s ability to cope with heavy rainfall. Floodwaters also swept plastic waste, bottles and chemical discharges through storm drains into the Arabian Sea, turning stretches of coastline into a dumping ground.

Beaches from Manora to Korangi Creek are now strewn with heaps of trash.

“While many witnessed the deaths and destruction caused by the recent rains in the city, few realize the downpours have also killed countless marine creatures,” Younus Khaskheli, a fisherman and local activist, said. “This has not only damaged the marine ecosystem but also severely affected the livelihoods of fishermen.”

Khaskheli said floodwaters surged through Karachi’s two major rivers — Lyari and Malir — carrying huge amounts of garbage into the sea. The Lyari River, running through most of the city, transported the largest share of debris, while drainage from Clifton and Defense added to the flow.