In Greek mythology, Cymothoe (Ancient Greek Κυμοθόη, "wave-swift") is a Nereid daughter of Nereus and Doris. Hesiod and Apollodorus name her in the fifty; Homer lists her among Thetis' mourning sisters; later poets give her small speaking or rescue scenes (Helle with Glaucus; Quintus' anger at Prometheus).
Adapted from Wikipedia, "Cymothoe (mythology)" · CC BY-SA 4.0
I.Wave-swift Nereid
Hesiod (Theogony 245), Apollodorus (1.2.7), and Hyginus list Cymothoe among Nereus' daughters. Homer (Iliad 18.39–51) places her in the bright cave when Thetis gathers her sisters to mourn Patroclus. Valerius Flaccus has her and Glaucus rescue Helle; Quintus Smyrnaeus gives her a speech cursing Prometheus for Thetis' forced marriage to Peleus.
Like her sister Cymodoce she is chiefly a catalogue name with occasional late colour; the atlas node is the Hesiodic–Homeric Nereid.
II.Homonym care
Distinct from the butterfly genus Cymothoe and from any Roman ship-nymph reuse. The atlas id cymothoe with kinds nereid is Nereus' daughter alone.