Areion is a miraculous horse, sometimes said to be born of Poseidon and Demeter. In poetry, he symbolises speed, nobility, and divine favour. Mythic horses like Areion embody the heroic ideal of partnership between mortal and divine forces in epic tales.

Areion (or Arion) represents one of mythology's most remarkable divine horses, born from Poseidon's union with Demeter (in most versions, while she searched for Persephone in the form of a mare). This immortal horse possessed the power of speech and supernatural speed, eventually belonging to Adrastus who rode him during the failed expedition of the Seven Against Thebes. The horse's ability to save Adrastus from certain death demonstrates the protective power of divine gifts. Areion embodies the connection between Poseidon's dual domains as god of both horses and earthquakes, representing untamed natural force channeled into service. For poetry students, Areion appears in contexts involving heroic warfare, divine favor, and the supernatural aid that marks epic protagonists. The speaking horse motif connects to broader Indo-European traditions and raises questions about the boundaries between human and animal, mortal and divine. References to Areion invoke themes of speed, salvation, and the extraordinary equipment of heroes.