'Improved online public access to environmental monitoring data and data tools for the Black Sea Basin supporting cooperation in the reduction of marine litter' or MARLITER is a project employing information technologies for better environmental monitoring at regional scale and decrease of solid waste in the marine environment. The project enhances international knowledge-based cooperation, information exchange and innovative capacity building between five partners – NGOs, higher education and research institutions – from Bulgaria, Georgia, Greece, Romania and Ukraine. It addresses cross-border pollution with marine litter and its reduction in the Black Sea Basin. The aim is to improve the availability of online public access data and data tools for environmental monitoring and adaptive management policies, supporting innovative non-formal education and joint measures on the reduction of marine litter across the region. To achieve this it will perform three groups of activities in the five countries: information exchange and integration, development of web based tool and capacity building for youth and other regional stakeholder groups. The project was launched in July 2018 and spans over 36 months.