Mangrove belts have dense roots above the soil that capture sediment and dissipate wave energy, creating natural coastal barriers that reduce erosion and limit flooding in inland areas. Rehabilitation projects focus on creating suitable conditions for sediment accumulation to encourage natural mangrove regeneration, for example through the use of permeable structures that attenuate waves and trap sediment. At the same time, they seek to create sustainable livelihoods and align economic development with mangrove conservation. Developing wider greenbelts can improve coastal protection, while longer greenbelts best support fisheries. Where space is limited, mangrove development can integrate with dikes or seawalls to achieve coastal protection goals.