Dionysus and the Pirates.

    Dionysus and the Pirates.. When Dionysus (Bacchus) was kidnapped by Tyrrhenian pirates and held captive on their ship, only Acoetes, the helmsman, recognized that their hostage was a god. Dionysus caused the ship’s masts and sails to become overgrown with vines and transformed himself into a lion, thus revealing his divine aspects. All the pirates, except Acoetes, jumped into the sea and were changed into dolphins; the helmsman was put ashore by the god and promised happiness and good fortune.
    Perhaps the most famous depiction from antiquity was made by Exekias, whose painting inside a black-figure drinking cup (kylix) from the sixth century bce shows the god sailing in a garlanded ship.