In line with Glenn Doman’s idea that “Play is learning, and learning is play: the more play, the more learning”, the staff of the Department of Environmental Physics and students of the Pomeranian Academy, Słupsk have for the past five years been actively involved, as part of the SatBałtyk project, in science fairs and similar events organized in the Słupsk region, e.g. Baltic Sciences Festival, Active Days – Secrets of Science, or the European Night of Museums. At such events we demonstrate the various SatBałtyk themes in an attractive and interesting way, so that visitors can understand and remember the most fascinating topics associated with the Baltic Sea. In order to do this, the participants in these events design and carry out experiments on their own. Young children take part in quizzes, solve jigsaw puzzles and do crosswords thematically related to the problems that SatBałtyk addresses. The biggest attraction of all, however, is always the making of models of algae, which the children can then take home as a souvenir.