User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-5247339-20130703090010/@comment-4902593-20130703124239

Yeah, its sort of wierd for Poseidon. Each time Zeus imposes a rule, Poseidon is usually the first god to break it. Idk, maybe he got depressed when Hera swapped Percy? (He would have immediately took revenge on her). Maybe he was too busy building a stronger army and thrashing rebel sea gods? (Lame excuse). Or maybe he disappeared from the planet like Percy. Gah! I HATE not knowing.