The Mermaid of Ustka symbolizes the town that it calls home, embodying jovial days at the beach and the laid-back coastal attitude of the whole community. Most importantly though, this statue is said to grant a wish and a half to anybody that touches the mermaid’s left breast.
Why a wish and a half? Touching a golden fish grants you three wishes. A mermaid is half a fish. Following that logic, touching the mermaid grants you a wish and a half. Why the left breast? Perhaps its proximity to the heart makes the wish more likely to come true.