They describe the current situation, and indicate what the situation in 2030/50 might be, what physical and biological impacts may emerge and how these changes might affect the economic potential of ocean-based activities. It is important to note the interconnections between the drivers and changes addressed in each subsection. By way of illustration, rising C02 emissions contribute to rising ocean acidification, which in turn affects certain marine creatures and, further compounded by e.g. ocean warming, pollution and ultimately the ocean’s biomass. The strongest warming trends have been found at high latitudes (Rhein et al.,