MANILA -- Hundreds of volunteers joined a mass cleanup drive along the coast of the polluted Manila Bay in the Philippine capital to mark International Coastal Cleanup Day on Saturday.

Volunteers and government workers, including hundreds of coast guard personnel, collected sachets, rubber slippers and other non-biodegradable waste that have been washed in the Manila Bay, a 60 km (37 mile) semi-enclosed estuary facing the East Vietnam Sea.

A volunteer picks up trash during a coastal cleanup drive at a protected bird sanctuary, ahead of the International Coastal Cleanup Day in Paranaque City, Philippines, September 16, 2022. Photo: Reuters

"This initiative will help make our coastal area in Manila Bay better so that our tourists and visitors will see the beauty of the bay," college student Kendrick Lopez, 18, told Reuters during the cleanup drive.

Volunteers sort trash picked up along the shore of Manila Bay on International Coastal Cleanup Day in Pasay City, Philippines, September 17, 2022. Photo: Reuters

Waters along the Manila Bay, famous for its idyllic sunsets, are heavily polluted by oil, grease and trash from nearby residential areas and ports.

The Philippines is rich in marine resources, with nearly 36,300 km (22,555 miles) of coastline in the archipelago of more than 7,600 islands.

A volunteer dressed in a Spider-Man costume picks up trash along the shore of Manila Bay on International Coastal Cleanup Day in Pasay City, Philippines, September 17, 2022. Photo: Reuters

But it is the world's top polluter when it comes to releasing plastic waste into the ocean, accounting for roughly a third the total, according to an April 2022 report by the University of Oxford's Our World in Data, a scientific online publication.

Volunteers pick up trash during a coastal cleanup drive at a protected bird sanctuary, ahead of the international coastal cleanup day in Paranaque City, Philippines, September 16, 2022. Photo: Reuters

"We need to do these (cleanup drives) for our environment and to discourage people from throwing trash on the seaside," Janet Panganiban, a 36-year-old volunteer, told Reuters.

Volunteers sort trash picked up along the shore of Manila Bay on International Coastal Cleanup Day in Pasay City, Philippines, September 17, 2022. Photo: Reuters

Critics say laws regulating solid waste are inadequate and poorly enforced, leaving governments and communities struggling to address the pollution crisis.

The International Coastal Cleanup Day is held every third Saturday of September to raise awareness of the growing garbage problems affecting coastlines around the world.