evidence: This chapter describe a case which is concerned with the delimitation of the maritime boundary between Qatar and Bahrain in the southern part of the Arabian/Persian Gulf. The dispute combined land sovereignty and maritime delimitation aspects. The chapter considers the importance of the decision in this case for international law as a whole. The Qatar v. Bahrain judgment is perhaps best known for its treatment of islands, islets, shoals, and low-tide elevations and other small maritime features. This remains the most important practical aspect of the case today. The area of delimitation was littered with small features, particularly within the territorial sea areas. The size of many of those features changed substantially between high and low tide.