Pakistan Navy conducts harbour cleaning campaign on World Ocean Day for clean and safe marine ecology APP49-080621 KARACHI: June 08 - Pakistan Navy conducts harbour cleaning campaign on World Ocean Day for clean and safe marine ecology. APP APP50-080621KARACHI: June 08 – Pakistan Navy conducts harbour cleaning campaign on World Ocean Day for clean and safe marine ecology. APP APP51-080621KARACHI: June 08 – Pakistan Navy conducts harbour cleaning campaign on World Ocean Day for clean and safe marine ecology. APP