Amphitrite both the Nereids "and" the Oceanids. Others called her the personification of the sea itself (saltwater). Amphitrite's offspring included seals and dolphins. Poseidon and Amphitrite had a son, Triton who was a merman, and a daughter, Rhodos (if this Rhodos was not actually fathered by Poseidon on Halia or was not the daughter of Asopus as others claim). "Bibliotheca" (3.15.4) also mentions a daughter of Poseidon and Amphitrite named Benthesikyme. Amphitrite is not fully personified in the Homeric epics: "out on the open sea, in Amphitrite's breakers" ("Odyssey" iii.101), "moaning Amphitrite" nourishes fishes "in numbers past all counting" ("Odyssey" xii.119).
Trident of Poseidon horse for mankind, while his rival Athena produces an olive tree. The oldest coins of Poseidonia from the 6th century BC depict trident wielded by Poseidon in his right hand, similar to Zeus's thunderbolt. An Attic red figure kylix from depicts Poseidon killing the Giant Polybotes with his trident. In another myth, Poseidon creates a spring or springs with the strike of his trident to reward Amymone for her encounter with him. In a version of another myth Poseidon wields his trident to scare off a satyr who tries to rape Amymone after she mistakenly hits him with a hunting