Introduction The Blue Economy is an economic model that focuses on the sustainable use of marine and coastal resources. It encompasses sectors such as fisheries, aquaculture, marine tourism, renewable ocean energy, and maritime transport. Small and medium enterprises (SMEs) play a vital role in this sector, contributing to job creation and strengthening local economic growth. However, these enterprises face challenges related to financing, technology, and competitiveness. In this context, major investments act as a key enabler for SMEs. The main factors can be summarized as follows: 1. Enhancing Access to Finance and Expansion SMEs in the Blue Economy often struggle to secure the necessary funding to scale their operations. Major investments help provide essential capital through mechanisms such as blended finance, which combines public and private funding to reduce risks and build investor confidence. For example, the Government of the Maldives launched the initiative “Transforming Blue Economy MSMEs through Blended Finance”, aimed at supporting SMEs in areas such as sustainable fishing and marine technology through partnerships with local and international financial institutions. 2. Technology Transfer and Innovation Large-scale investments introduce advanced technologies to SMEs, enhancing their capacity for innovation and improving production efficiency. For instance, in Odisha, India, the government launched the “Odisha Marine Biotech Research & Innovation Corridor”, designed to support marine technology startups by providing a cutting-edge research environment and facilitating access to global markets. 3. Job Creation and Community Development Major investments in the Blue Economy contribute to generating new employment opportunities, particularly in coastal communities that rely heavily on marine activities. By supporting SMEs, economic and social development in these regions is strengthened. For example, in Seychelles, a study demonstrated that supporting entrepreneurship in the Blue Economy can improve livelihoods and reduce poverty in coastal communities. 4. Improving Competitiveness and Access to Global Markets Through financial and technical support, SMEs can enhance the quality of their products and services, boosting their competitiveness in both local and international markets. For instance, in Indonesia, a Blue Economy model integrating sustainable marine resource use with the circular economy was developed. This helped SMEs improve sustainability and strengthen their competitive edge. 5. Addressing Challenges and Future Opportunities Despite the many benefits of major investments, SMEs still face challenges such as limited access to finance, lack of technical skills, and difficulty adapting to environmental changes. To overcome these challenges, it is essential to adopt supportive policies, provide training programs, and strengthen collaboration between the public and private sectors. Conclusion Major investments in the Blue Economy play a pivotal role in supporting the growth and sustainability of SMEs by providing financing, transferring technology, creating jobs, and improving competitiveness. By adopting supportive policies and fostering collaboration among stakeholders, sustainable economic development can be achieved, benefiting coastal communities and the national economy.