Why do mangroves grow best in protected coastal areas with low wave energy?

Mangroves thrive in protected coastal areas with low wave energy primarily because these conditions are essential for the successful establishment of their seedlings.1

In environments with high wave energy, the physical force of the water can prevent young mangroves from taking root. Conversely, lower-energy conditions—typically found in estuaries, salt marshes, and deltaic regions—allow the seedlings to settle and stabilize. Once established, the specialized root systems of these trees, such as prop roots and pneumatophores, become highly effective at trapping sediments. This process not only helps the mangroves expand their habitat but also plays a critical role in reducing erosion and protecting shorelines from the very waves and storm surges that would otherwise threaten them.213