About 160 people from government agencies and non-governmental organisations collected over 500kg of litter, including bottles, papers and wrappers, in the community effort.
The rubbish was put in plastic bags and sent to the national sailing complex here to be picked up by municipal council workers, the gotong royong programme committee chairman, Mohd Afendy Abdullah, said.
Twenty boats were used to ferry the participants to the islands and take out the garbage.
The islands included Pulau Dayang Bunting, Pulau Singa Besar, Pulau Singa Kecil and Pulau Beras Basah.
Commenting that the clean-up had restored the beauty of the islands, he urged visitors not to litter.
AL :Good to hear efforts done to clean up Langkawi. May this becomes a continuous effort.