Who were Poseidon's children?

Poseidon's children were Theseus, Triton, Orion, Otus, Polyphemus, and Ephialtes.

Poseidon had his first three children, his first lady named Χριστίνα or Chrustane, his second a man named Βικέντιος: Vincent, and his third they said was a younger boy named Perseus but turned out as a lady Parseus or Διατηρώγια which ment Cherishette:to love. She was named this from her step mother Aphrodite. Poseidon had many children after his first wife who's name is unknown but they knew she was a a fortune teller or seere of orahas. He has many others unknown. Although legend has it that they say his children are alive today.