The purpose of this study was to examine the symbolic meanings of dolphins, which frequently appear in sand boxes. To this end, information about dolphins was researched and their symbolic meanings were explored through the researcher’s sand boxes, observation records and reflective journals. The researcher was a woman in her late thirties who was living an exhausting life of child-rearing, household chores, work and education as well as striving to be a capable and professional worker. Through the changes of dolphins in her sand boxes in the sandplay therapy course for three years (more than 200 hours), she was able to overcome her problems and find inner freedom for her soul. For the researcher, the figure of the dolphin symbolized salvation, guidance, collaboration and rebirth.