What are the adaptations or unique features of mangrove plants to thrive in salt marshes?

Cable roots, stilt roots or prop roots – support them in the loose marshy soil.

Breathing roots or pneumatophores – for air exchange; and prevent soil erosion.

Knee-like roots, plank roots and buttress roots

Salt-excreting leaves.

Salt-accumulating leaves – take the salts with them to the ground when they fall off.

Viviparity – seedlings grow in the mother plant itself – increase survival rate.