- Sindria Kingdom
- Heliohapt Kingdom
- Sasan Kingdom
- Reim Empire
- Kina Kingdom (former)
- Kou Empire
|“||Don't invade and don't be invaded.||”|
The Seven Seas Alliance has become one of the world's superpowers, on par with the Kou Empire, and it is also influential and powerful enough to be able to undermine the Kou Empire's foreign affairs and military expansion. The seven different countries contribute their military forces, led by Sinbad. Countries known to be part of the Seven Seas Alliance were Sindria, Heliohapt, Artemyra, Kina, Imuchakk, and Sasan. Although the alliance's army functioned as a peacekeeping and defense force, they possessed a powerful naval fleet and a massive flock of giant birds.
The Seven Seas Alliance has entered a confederation with the Reim Empire to put the Kou Empire's aggressive expansion in check.
During the summit, The Yamabala seems to have affiliated with Sinbad or partly the Seven Seas Alliance. The Yamabala warriors protect Sinbad and his household members who were powerless when Sinbad's metal vessels were temporarily confiscated during the summit.
Metal Vessel Users
|Armakan Amun-Ra (former)||Heliohapt Kingdom|
|Mira Dianus Artemina (former)||Artemyra|
|Darius Leoxses (former)||Sasan Kingdom|
|Muu Alexius (former)||Reim Empire|
|Ignatius Alexius (former)||Reim Empire|
|Nerva Julius Caluades (former)||
|Takeruhiko Yamato (former)||Kina Kingdom|
- In Medieval Arabia, the term "Seven Seas" (بحار العالم ، سبعة البحار) was applied to ancient Eastern trading routes, and referenced frequently in literature.
- Though this terminology doesn't appear in the original tale, Sinbad has been tied to the Seven Seas several times in film and TV, such as Sinbad of the Seven Seas and Sinbad: Legend of the Seven Seas.