This is a brief history of blockades in the Emerald Ocean. For blockades dated before the Emerald Ocean was formed, see Hunter blockade history and Sage blockade history. Blockade winners are indicated in bold. All blockades without defenders (uncolonized) are sinking. All blockades with defenders (colonized) are non-sinking unless noted otherwise. All dates represent the day (in PST/PDT timezone) that the first round began. Only official contenders and defenders are listed. Contenders' allies are not listed, nor are unallied defenders.