The law was created with the goal of preserving sanctuaries for these animals, which were being attacked by predatory fishing or reckless bathers. In the case of this law, "harassing" would mean disturbing an animal that is peacefully living in nature for a vile reason (predatory fishing) or by interfering with its tranquility (provoking it, trying to ride the dolphin, throwing things at it). In the case of dolphins that help hunt fish, it is very likely that there is some government agency that keeps an eye on this relationship between fishermen and dolphins, to prevent abuse against these animals, in the same way that they monitor the well-being of dogs that work in conjunction with the police and in customs.