The Healthy Oceans and Clean Cities Initiative (HOCCI) is a regional project funded by the Government of Japan and is being implemented by UN-Habitat in the Philippines in cooperation with global, national, and local partners. HOCCI aims to enable local governments and communities in the Philippines to reduce marine plastic pollution.

SPS led the writing and research of the paper Community Behavior Change Strategies for Plastic Waste Reduction: 10 Key Questions, which explores barriers and motivations, and offers recommendations to promote behavior change at the community level.