In ancient Greek mythology, Poseidon had children who were god and goddesses like he was and they could not die.
Thesus,Triton,Polyphemus,and Ephialtes
the function of Poseidons temple was for Poseidons honor.
Rhea.
cronus
Cronus and Rhea
Neptune
a trident
Triton
Rhea.
Amphitrite - It's stated in the Wikipedia entry (see related link) scroll down to the section on 'Consorts and children'
In myths, he does not have one.
Swimming, fishing and women.