The sea, as well as other marine motifs in children's literature, often includes exploration, adventure and moral lessons, in this context children face the concepts of courage, friendship and overcoming obstacles. Also, the writers of plays often use the sea as a scenic space that enables the development of the plot and characters in such a way that the content is exciting and educational. In plays Luko Paljetak's "The Fisherman Palunko and His Wife" and "Captain Ivo and the Mermaids", the sea symbolizes not only a physical environment but also emotional and moral challenges. Through encounters with various mythical creatures related to the sea, such as mermaids, children learn values such as modesty, responsibility, and the importance of making the right decisions. In plays where the sea is the central motif, children are allowed to enter unexplored worlds and stimulate their imagination. By method of analysis and interpretation this work shows the motif of the sea as one the occasional motifs in children’s literature. In the absence of plays with a sea motif, different literary templates can be used for dramatic performance. The aim of the final paper is to search thoroughly, analyze and interpret a motif of the sea and, in some parts of plays point out its fruitfulness to the croatian literature.