Project aims to develop a sustainable, cost-effective framework for plastic litter detection, monitoring and management in marine and coastal environments. Plastic litter is linked with negative economic, social and ecological consequences and common challenges related to plastic litter are complex: increasing amounts of microplastic, direct harm to the marine biodiversity and negative impacts on recreational activities. Absence of physical coastal borders between Latvia and Lithuania means that actions taken in one country might affect the other. Plastic that accumulates in algal wracks on the shore or in algal scum might be a target area for plastic pollution estimation and mitigation measures. The project aims to link remotely sensed features (Earth observation from space and drones) with marine plastic litter in such areas and suggest a joint and efficient approach for monitoring and management, which can be used by municipalities or national authorities in Lithuania and Latvia. Moreover, in relation with a single-use plastic ban from the year 2021 project aims to screen alternatives to replace single-use plastic, assess environmental, social and economical impact of marine litter pollution and it’s reduction; engage consumers, retailers, local municipalities, industry representatives, residents, environmental groups and tourism associations – to ensure broad support of a ban of single plastic use in coastal areas