This article considers the law of maritime delimitation as applied by the Arbitral Tribunal in the 2014 Bangladesh v. India case. The dispute concerned the delimitation of the maritime boundary between the two states in the north-eastern part of the Bay of Bengal. The Tribunal's Award covers several important issues which require careful examination, such as the land boundary terminus, the delimitation methodology, the role of objectivity, predictability and transparency in maritime delimitation, and the impact of the established case law on the present delimitation procedures. The commentary analyses the Award from the viewpoint of the law of maritime delimitation and traces how the Tribunal applied and developed the methodology used in maritime delimitation. The key points where the Award advances the law of the sea concern the concavity of the coast as a relevant circumstance and the creation of grey area. The Tribunal made significant pronouncements on the continental shelf, especially, beyond 200 nm. It confirmed the concept of a single continental shelf and reasoned that legal regimes of the EEZ and the continental shelf are independent and separable. However, the creation of another grey area met with strong disagreement from Dr Rao. The author considers the Award and the Dissenting Opinion to argue that the adjustment of the equidistance line raises certain concerns and that the creation of grey area is permissible under UNCLOS.