The pollution of water by plastic is a topic that has been in the media for a few years now. In 2015, the School of Engineering FHNW and the School of Business FHNW investigated whether a robotic fish – like Oliver Bendel’s CLEANINGFISH (2014) – could be a solution. In 2018, the information and machine ethicist commissioned another work to investigate several existing or planned projects dealing with marine pollution. Rolf Stucki’s final thesis in the EUT study program was based on “a literature research on the current state of the plastics problem worldwide and its effects, but also on the properties and advantages of plastics” (Management Summary, own translation). “In addition, interviews were conducted with representatives of the projects. In order to assess the internal company factors (strengths, weaknesses) and external environmental factors (opportunities, risks), SWOT analyses were prepared on the basis of the answers and the research” (Management Summary) According to Stucki, the results show that most projects are financially dependent on sponsors and donors. Two of them are in the concept phase; they should prove their technical and financial feasibility in the medium term. With regard to social commitment, it can be said that all six projects are very active. A poster shows a comparison (the photos were alienated for publication in this blog). WasteShark stands out as a robot. He is, so to speak, the CLEANINGFISH who has become reality.