After many years of searching, divers from Ocean Discovery in Västervik found the wreck of Erik XIV’s legendary flagship Mars, in 2011. In 2013 archeologists joined together to reconstruct a cross-section of the battle space. To this end, a selection of ship timbers were salvaged for detailed documentation on the surface.
PhD at Stockholm University 1995. Senior curator/marine archaeologist at the National Heritage Board UV Stockholm 1994-97. Teacher and researcher at Södertörn University since 1997.
Associate professor (docent) in archaeology at Stockholm University in 2000. Between 2003-2008 head of Södertörn University Higher Education Development Unit (HPU). STINT fellow and guest professor at Skidmore College, USA fall 2005. Extern examinator Southampton University 2001-2005. Associate professor (docent) in maritime archeology at Helsinki University in 2008.
Professor of Maritime Archaeology at Södertörn University 2009. Since 2010 responsible for the Maritime Archaeological Research Institute, MARIS, at Södertörn University.
His research have focused on different shipwrecks in the Baltic Sea, but have also concerned Viking age lake dwellings, harbours and prehistoric landscapes under water. He has as well published several studies dealing with coastal landscapes and mans cultural and social interaction with water.