| Arthur Curry, the human-born heir to the underwater kingdom of Atlantis, goes on a quest to prevent a war between the worlds of ocean and land | However, Arthur learns that Atlantis is being ruled by his malicious half-brother Orm Patrick Wilson , who seeks to unite the seven underwater kingdoms and wage war upon the surface |
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| This was reinforced by empirical evidence from lunar eclipses, and changes in the night sky when travelling south - then Eratosthenes used angles of shadows cast at noon to correctly calculate a circumference of about 25,000 miles |
Born upon the shores of the surface world, Arthur Curry Jason Momoa discovers that he is only half human, with the other half of his blood being of Atlanteean descent, thus making him the rightful heir to the throne of the undersea kingdom of Atlantis.
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