The Cape Verde summer school addresses ocean biodiversity and the impacts and management of human activities. The heavily exploited marine ecosystems of Northern Europe and Eastern Canada, their historical, and present-day management regimes are contrasted with the current situation of Northwest African ecosystems, which have become the focus of a major, international fishery. The availability of relevant scientific knowledge to assess the sensitivity and propose management regimes for key deep-sea ecosystems are explored. The majority of these deep sea ecosystems, such as continental margins, hydrothermal vents, cold seeps and seamounts, lie in international waters. HOSST and TOSST candidates are joined by top selected students and researchers from Cape Verde and other West African nations.