The marine environment has plunged into crisis with the growth of human activities. The enhancement of responsible environmental behavior (REB) requires policy and education to cultivate social awareness and actions to sustain marine resources. Several studies revealed that the intention serves as an effective predictor of actual behaviors. Furthermore, researchers generally acknowledge that attitudes and perceived behavioral control are potential factors toward behavior intention. However, some research has found that a positive attitude toward the environment does not translate into responsible environmental behavior. Additionally, the model of behavior in the marine context, especially the relationships between attitudes, perceived behavioral control, and the intention of responsible environmental behavior, are still not clear. Students’ attitudes, perceived behavioral control, and intentions toward responsible marine environmental behavior (M-REB) were evaluated via questionnaires. The data from a total of 79 undergraduate students were analyzed. The results suggest that perceived behavioral control is the mediator between attitudes and intentions toward M-REB. This finding reveals the potential benefits of reconsidering the importance of perceived behavioral control in promoting M-REB and provides empirical evidence for future policy-makers in society and education.

When considering how to improve public literacy and behavior related to specific themes, top priority is usually given to strategies that enhance relevant knowledge. Fostering attitude comes later. Understanding the mechanisms of behavior may help us develop better policy and educational strategies. However, how knowledge and attitude impact behavior is still under investigation. The aim of this study is to explore the relationships among ocean knowledge, attitude toward the ocean, and the intention to behave responsibly in the marine setting. Specifically, we investigated a potential mediation mechanism by recruiting a total of 266 participants, whose ocean knowledge, attitudes toward the ocean, and intention to behave responsibly were evaluated using questionnaires. The results indicate that a person’s attitude toward the ocean may indeed be a mediating factor between ocean knowledge and their intention to show positive marine behavior. In order to engage people in responsible ocean behavior, other forms of assistance from marine policy and education are recommended. Additionally, it would be of interest for future studies to investigate the effects of attitude and attitude-related knowledge in the development of ocean actions.