Trailer of the future documentary regard a scientific expedition to the Baltic Sea with the research vessel "Pelagia". This scientific cruise is funded by NIOZ Royal Netherlands Institute for Sea Research, the Netherlands Organisation for Scientific Research (NWO) and is part of the EU-BONUS funded project HYPER which stands for Hypoxia mitigation for Baltic Sea Ecosystem Restoration. The main aim is to study the oxygen stress in the Baltic Sea floor under a geochemical prospective using sediment coring techniques. This is a personal production project free of funding within my master research project at Utrecht University, The Netherlands.