The plastic pellet spill disaster of August 2012 marked a watershed moment for Hong Kong’s marine environment. While the pellet spill crisis has abated, the physical effects of marine debris are a constant presence on Hong Kong’s beaches and coastlines. Plastic items accounted for the highest proportion of all marine debris, this reflects a serious regional problem with the consumption and improper disposal of single-use plastic products by the public. Coastal Watch aims to use scientifically-sound methodologies to study, protect and provide year-round monitoring for all of Hong Kong’s ecologically valuable coastal habitats. Its ultimate objectives are to develop a long-term solution to the marine litter problem, educate a broad segment of the Hong Kong public about our marine environment and then inspire and mobilize these people to take positive action to shape its future.