AUTHOR Candra Premananto GancarRakotoarisoa Maminirina FenitraKurniawati MasmiraRakotoarisoa Maminiaina Heritiana SederaAnsar Abbas DESCRIPTION This research aims to explain the intended environmentally responsiblebehavior of Beach visitors. Beach tourism is one of the most vulnerable areas,and yet sensitive to the consequences of littering caused by the growingpopulation of beach visitors. This work aims to determine the factorssignificantly influencing intended environmentally responsible behavior,particularly Beach litter prevention. An extended theory of planned behavioris used to explain this phenomenon by incorporating biospheric value andpositive affect. Convenience sampling techniques were used to collect thedata, and a survey was conducted in the Gunung Kidul area, YogyakartaSpecial Region, Indonesia. The survey questionnaires were distributed in thethree research sites: Krakal, Baron, and Sunda Beaches. The sample of thisresearch consisted of 317 Beach visitors. The results were obtained fromStructural Equation Modeling (SEM) following a two-step analysis to ensureand evaluate the accuracy and quality of the measurements and the model.The result demonstrates a positive association between biospheric value andpositive affect and attitude toward behavior. Besides, attitude toward behaviorand perceived behavioral control predict beach litter prevention intention,whereas subjective norms were insignificant. This study integrated biosphericvalue and positive affect to advance the theory of planned behavior. This workprovides additional knowledge to the literature, particularly in the context ofBeach tourism. The results highlighted the importance of biospheric value andpositive affect, which can be leveraged when considering solutions to thelittering problem. Both practical implications and future research agenda arealso discussed in this study. In addition, this work addressed the limitationand future direction of this research, which suggest adopting this model in different contexts. See Journal PUBLISHED Des 2023