"Kesätoverit: Meren säveliä" is an exciting book by the Finnish writer Hilja Haahti, which reveals to the reader the feeling of summer and friendship. In this book, the author gives us vivid images of the summer adventures of the main character, who goes on an unforgettable trip to the seashore. The pages are filled with the sounds of sea waves, birds singing and the warm rays of the sun. "Kesätoverit: Meren säveliä" is a book that transports the reader to the world of summer beauty and joy, where you can feel peace of mind and discover new feelings for yourself.