An important bacterium in the medicinal treatment of burns is Pseudomonas auruginosa. For proper treatment with antibiotics, the origin of the bacteria is often important. The burns unit of the Military Hospital Queen Astrid (Nederoverheembeek, Brussels) maintains a global collection of Pseudomonas auruginosa subspecies and strains and studies the migrationpatterns of these bacteria. To complete this collection samples for the coastal waters ought to be collected. This one time evet aims at collecting Pseudomonas bacteria from both inshore and offshore waters of the North Sea.