Poseidon had many children, but some of his daughters were Despoine, Rhode, Benthesikyme, Herophile, Eirene and Euadne. While some daughters were mortal woman, such as Eirene and Euadne, other were divine goddess like Despoine. However, Rhode, Benthesikyme and Herophile were nymphs.
Poseidon had many wives, consorts and lovers, including Amphitrite, Demeter, Aphrodite, Eurynome and Alcyone. Similarly, he had many male offsprings who were gods, demi-gods, giants and mortals. Among the most famous sons believed to be fathered by Poseidon are the god Triton, the hero Theseus and Polyphemus the Cyclops.
Poseidon was the Greek god of the sea or other water domains. He is also associated with the horse and dolphin, his sacred animals. His brothers were Hades and Zeus.