The term "spit sea" refers to a narrow strip of land that extends into the sea, forming a beach or a peninsula. Synonyms for this include sandbar, isthmus, tombolo, and causeway. A sandbar is a narrow strip of sand that forms in shallow water parallel to the shoreline. An isthmus is a narrow strip of land that connects two larger land masses. A tombolo is a sandbar or shoal that connects an island to the mainland. A causeway is a raised road or bridge that connects two land masses. All these synonyms describe land formations that are created by the natural forces of wind, waves, and tides.