The 'Plastic free beach' operation ran from Castelo do Queijo beach to Carneiro beach, according to NM.

In total, 115 kilos of waste were collected, and, "in just one hour, 1,200 cigarette butts were collected", highlighted the same note.

"This type of action aims to raise awareness among young people about the environmental consequences that are caused by the presence of rubbish on the beaches", stressed the Navy.

The initiative was carried out in collaboration with the Porto City Council and the National Maritime Authority.