Purpose The purpose of this study is to explore the relationship between investment behaviors and financial sector sustainability within the framework of the blue economy. It seeks to assess how different investment behaviors influence financial sector sustainability and contribute to economic resilience in India's coastal areas, particularly focusing on sustainable development. Design/Methodology/Approach This research adopts a mixed-methods approach, combining quantitative and qualitative data. Quantitative data will be collected via surveys and financial performance analyses of blue economy organizations, while qualitative data will be obtained through interviews with key stakeholders, such as investors, policymakers, and industry experts. This dual approach aims to provide a holistic understanding of sustainable investment behaviors. Findings The findings are anticipated to shed light on the factors influencing sustainable investment decisions within the blue economy. It is expected that the results will offer insights into effective investment strategies that balance economic growth with environmental sustainability, thus enhancing financial sector sustainability and contributing to overall economic resilience in coastal areas. Originality/Value This study contributes original insights into the intersection of investment behaviors, the blue economy, and financial sustainability, an area that has seen limited empirical research. By focusing on the context of India's coastal regions, the study offers a unique perspective on the role of sustainable investments in driving both economic growth and environmental conservation. Research Limitations/Implications The study may face limitations related to the availability of reliable data on blue economy organizations and the subjective nature of qualitative interviews. Nevertheless, it provides a valuable framework for future research on sustainable investment behaviors and their broader economic implications, particularly in emerging markets like India. Practical Implications The findings will offer practical recommendations for investors and policymakers to align investment practices with sustainability goals. The study aims to promote investment strategies that support economic resilience, environmental stewardship, and the sustainable development of financial sectors engaged in the blue economy. Social Implications By promoting sustainable investment practices, the study contributes to enhancing livelihoods and protecting marine ecosystems in coastal regions. It highlights the importance of balancing economic development with environmental conservation, ensuring that future generations can benefit from a sustainable blue economy.