What term describes a shoreline where the sea has risen or land has sunk?

The term that describes a shoreline where the sea has risen or the land has sunk is "Submerged Shoreline." This refers to areas where the ocean has advanced inland due to rising sea levels or where land subsidence has caused the shoreline to move further away from its previous position. Submerged shorelines typically result in increased flooding in coastal areas and can affect ecosystems, human structures, and land use in these regions. This concept is particularly important in understanding coastal geography and environmental changes, especially in the context of climate change and natural geological processes.