This report is the outcome of a study conducted by NACA to assess the impact of the 2004 Indian Ocean tsunami and of the introduction of US anti-dumping duties on the shrimp farming sectors of countries in the Asia-Pacific region, with special focus on the effect that these unusual events had on shrimp prices and stakeholders' livelihoods. The assessment was conducted by collecting data from a wide range of stakeholders involved with shrimp farming in three case countries: One affected by the US anti-dumping duties (Vietnam), one affected by the Indian Ocean tsunami (Indonesia) and one not affected by either event (Bangladesh).