Safety_and_EnvironmentPetrobras cleans up 'mystery' oil spillsBrazilian state giant says oil that has washed up on about 100 beaches is not its ownAn oil-covered sea turtle crawls along Itatinga beach after a spill, affecting the northeast coast, in Alcantara, Maranhao state, Brazil September 22, 2019REUTERS/SCANPIXGareth Chetwynd