Human activities such as intense fishing and coastal development are altering the Atlantic marine ecosystems around the South and Tropical Atlantic. The EU-funded TRIATLAS project aims to study the current situation of the Atlantic Ocean’s marine ecosystem and predict future changes. A range of African, European, and South American institutions specialised in climate change, oceanography and social sciences, as well as local stakeholders will be engaged in the project. TRIATLAS will also work closely with relevant European Commission services. The project will observe the impact of pollution and climate change on the marine ecosystem to present the first prognosis for the next 40 years for the whole Atlantic. This will aid in sustainable management of human activities.