The Gulf of Mottama, located in the southwest of Myanmar and bordering the Andaman Sea, is unique in many ways. Its extensive intertidal mudflats are home to many shorebirds, fishes and other flora and fauna. Its mouth is around 100 km wide and narrows into a funnel-shaped bay towards Sittaung River in the north (Figure 1.1). The area is known for its powerful tidal bore phenomenon where the incoming tide forms a wave that can reach heights of over a meter in the upper estuary.