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 they say his children are alive today.
Read more: Who_were_Poseidon's_children
well in the series Percy Jackson and the Olympians Percy who was Poseidon's son was Perseus the real son of Poseidon and some cyclopes because the cyclopes were also the children of Poseidon.
Poseidon has many children
Thesus,Triton,Polyphemus,and Ephialtes
the function of Poseidons temple was for Poseidons honor.
like any ordinary human being
Zeus did because he had many Godly children and many Demi-God children
Rhea.
cronus
Cronus and Rhea
Triton
Neptune
Rhea.
a trident
Amphitrite - It's stated in the Wikipedia entry (see related link) scroll down to the section on 'Consorts and children'