The Emerald City has no name, and its buildings are not towers. Its numerous citadels are not built of marble. There is no flag, no emblem, no crest. Its people do not bear any banners, or carry any flags. Its capital is an impenetrable fortress, from which no ships have ever returned.
The Sirens are a group of mythical creatures that have the power to lure unsuspecting sailors to their deaths. Their appearance varies, but they are all known to use music to entrance their victims.
As you progress through Coral Fortress in Sea of Thieves’ Tales of the Black Friars: In Pirate’s Life, you have the opportunity to unlock some of Siren’s murals. These five murals are spread throughout the level and appear when you pull the levers in a certain order. If you find the five mermaid murals, you will be rewarded with the call of the mermaid.