Currently, coastal erosion is becoming increasingly severe, with the average erosion rate rising each year. Over the past decade, this worsening situation has been driven by multiple factors. These include the 2004 tsunami disaster, which caused land subsidence below the original sea level, as well as the melting of polar ice caps, which adds significant amounts of water to the interconnected global oceans and seas. The Importance of Coastal Erosion Prevention Preventing coastal erosion is crucial, as it has significant impacts on both the marine environment and human safety. Effective erosion prevention helps ensure that land is not lost to severe coastal erosion, preserves the marine ecosystem, and maintains the habitat for aquatic life. Additionally, it prevents land subsidence, which can have further environmental and economic consequences. Coastal protection also enhances safety for tourists and seafarers, as erosion can pose dangers to people living or traveling in coastal areas. By reducing the risks associated with marine accidents, effective erosion prevention measures contribute to sustainable economic activities, particularly for coastal communities reliant on fisheries and agriculture. Environmental and Economic Benefits Mitigating coastal erosion helps maintain marine ecosystem balance, which is essential for marine resource management and environmental conservation. This, in turn, supports the growth of marine biodiversity, benefiting the fishing industry and other marine-related economic sectors. Furthermore, erosion control plays a vital role in protecting key maritime economic areas in Thailand, including marine tourism, trade, and coastal infrastructure. Roads, buildings, and essential infrastructure along the shoreline can be safeguarded from damage, reducing the need for costly repairs and minimizing financial losses.