Which of the following depositional features is produced by wave action along coastlines, connecting an offshore island to the mainland?

💡 Solution & Explanation

A tombolo is a depositional coastal landform in which an island is attached to the mainland by a narrow ridge of sand and gravel formed by wave refraction and longshore drift. Spits are ridges of sand projecting from the land into a water body without necessarily reaching an island. Stacks are erosional remnants of coastal headlands rather than depositional connections. Coastal geomorphology frequently examines tombolos to understand sediment transport dynamics.