Marine wildlife tours can provide a range of education and conservation benefits for visitors, including emotional (i.e., affective) responses and learning (i.e., cognition). Interpretive programs cover the biology, ecology, and behavior of marine species; best practice guidelines; and human threats to marine areas. The author reviews the education and conservation benefits of 18 marine wildlife experiences with dolphins, whales, and marine turtles by using (a) M. Orams's (1999) framework of indicators such as behavior or lifestyle changes in visitors and (b) 3 environmental indicators of conservation. Results of this meta-analysis showed that visitor learning and emotional empathy during mediated encounters with marine wildlife contributed to on-site behavior changes and some longer term intentions to engage in marine conservation actions. The author presents an experience-learning-action model to guide research and develop free-choice visitor learning. (Contains 8 tables.)