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 resembles the arrow-headed pronged fork, used by the Mediterranean fishermen to catch eels. Poseidon became particularly worshipped in coastal countries, where fish formed a basic commodity of trade. According to competing proposal by H. B. Walters, Poseidon's trident is derived from Zeus' lotus sceptre, with Poseidon being Zeus in his marine aspect. In Greek myths, Poseidon wields his trident on a number of occasions. During the contest with Athena over the possession of Attica, Poseidon strikes the Acropolis with the trident to produce a well of seawater. In a similar myth Poseidon strikes the ground with trident to produce a