In ancient Greek mythology, Amphitrite was the goddess of the sea, the queen of the sea, and her consort is Poseidon.

She was a daughter of Nereus and Doris (or Oceanus and Tethys). Under the influence of the Olympian pantheon, she became the consort of Poseidon and was later used as a symbolic representation of the sea. Her Roman counterpart is Salacia, a comparatively minor figure, and the goddess of saltwater.

Amphitrite's offspring included seals and dolphins. She also bred sea monsters and her great waves crashed against the rocks, putting sailors at risk. Poseidon and Amphitrite had a son, Triton, who was a merman, and a daughter, Rhodos.

Poseidon is one of the Twelve Olympians in ancient Greek religion and mythology, presiding over the sea, storms, earthquakes and horses. He was the protector of seafarers and the guardian of many Hellenic cities and colonies. In pre-Olympian Bronze Age Greece, Poseidon was venerated as a chief deity at Pylos and Thebes, with the cult title "earth shaker"; in the myths of isolated Arcadia, he is related to Demeter and Persephone and was venerated as a horse, and as a god of the waters.

Poseidon maintained both associations among most Greeks: he was regarded as the tamer or father of horses, who, with a strike of his trident, created springs (the terms for horses and springs are related in the Greek language). His Roman equivalent is Neptune.

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