Geir Johnsen is co-leader of the work package ‘Impact and legacy’. Johnsen's main interest are marine ecology and biodiversity, bio-optics, micro-macroalgal photosynthesis, pigment chemotaxonomy, underwater robotics and sensor development for in situ identification, mapping and monitoring of bio-geo-chemical objects of interest in the marine environment. Currently, Johnsen’s emphasis lies on polar night biology (photo-biology), macroalgae, benthos and zooplankton (incl. larvae) in the Arctic. Using enabling technology (new underwater robots and sensors) in marine science is core activity to gain a better knowledge-based natural resource management and decision making.