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Amphitrite-Poseidon's Wife. Poor old Amphitrite doesn't get much press as the wife of Poseidon. She's not even mentioned in Rick Riordan's Percy Jackson series. If she was, I missed it. In the Seven Adventures of Cadida, Amphitrite appears, but she doesn't get a lot of page time.
Poseidon is the Greek god of the sea, horses and earthquakes. He rules the sea and controls how it behaves, whipping up storms when he is angry or upset, and creating horses fâ¦rom the seafoam when he is in a lighter mood. He also creates earthquakes when he is angry and is sometimes known as the Earth Shaker.