A coastal depositional feature consisting of a spit or sandbar that connects an island to the mainland is known as a:

💡 Solution & Explanation

A tombolo is a coastal depositional landform where a spit or sandbar connects an island directly to the mainland. Unlike barrier beaches or standard spits that terminate in open water, a tombolo forms a land bridge due to wave refraction around the island. Coastal geomorphology is a frequent topic in physical geography.