Marine energy development harnesses the power of oceans and seas to generate sustainable and renewable energy. This emerging sector includes various technologies, such as tidal, wave, and ocean thermal energy conversion. Tidal energy exploits the gravitational pull of the moon, while wave energy captures the kinetic energy from ocean waves. The potential of marine energy is vast, offering a consistent and predictable power source. Unlike some renewable alternatives, marine energy is not weather-dependent, providing a reliable and constant energy stream. It has the advantage of low visual impact and can be integrated into coastal areas without significant disruption to ecosystems. Research and development in marine energy aim to enhance efficiency, reduce costs, and minimize environmental impacts. As technology advances, it holds promise for contributing significantly to global energy portfolios, reducing reliance on fossil fuels. Governments and private entities worldwide are investing in pilot projects and infrastructure to unlock the full potential of marine energy, contributing to a cleaner and more sustainable energy future. However, challenges like technological maturity, environmental concerns, and high upfront costs must be addressed to realize the full potential of marine energy on a global scale.