The area of land along a coastline that is below the water level, often related to islands or coastal regions that have been submerged.

जलमग्न तट

English Usage: The submerged coast revealed ancient ruins during the low tide.

Hindi Usage: जलमग्न तट ने निम्न ज्वार के दौरान प्राचीन खंडहरों को प्रकट किया।