In Greek mythology, Dynamene (Ancient Greek Δυναμένη, "she who can" or "the capable one") is a Nereid, one of the fifty sea-nymph daughters of Nereus and the Oceanid Doris. Named in Hesiod's Theogony and Apollodorus' catalogue, she appears with her sisters in Homer's Iliad when they gather to comfort Thetis after the death of Patroclus.
Adapted from Wikipedia, "Dynamene" · CC BY-SA 4.0
I.Nereid of the catalogues
Dynamene belongs to the standard Nereid lists: Hesiod (Theogony 248), Homer (Iliad 18.43), Apollodorus (1.2.7), and Hyginus' preface. Classical handbooks pair her with Pherusa as spirits of the power and swell of the open sea; some modern summaries credit her with rapid appearance and disappearance on the waves.
She has no independent episode beyond the Iliadic gathering of the Nereids around grieving Thetis. Variant spellings include Dyomene and Dinamene.
II.Atlas note
This atlas entry (dynamene) is the Hesiodic Nereid. She is distinct from later or local sea-figures who share only a similar root of "power" or "force," and she should not be conflated with Galene (calm) or Galatea (the Sicilian Nereid of Acis).