Arion. To find out more about the legend of Arion, see this Wikipedia article: link; for information about the image: image source.
Today's image shows Arion, a legendary musician. After winning a musical competition, Arion was on his way home when his ship was attacked by pirates. Arion begged permission to sing a last song, and the beauty of his singing attracted dolphins to the ship. Arion then jumped overboard and was carried to land safely by one of the dolphins (yes, that is a dolphin in the picture there - not exactly your friendly Flipper-type of dolphin!). For more about the legend of Arion and what happened after the dolphin brought him ashore, see Wikipedia; you might also enjoy this Arion emblem by Rollenhagen here.
You can also find more myths and legends for the week of January 22-28 here. For more information and links to the actual javascript code, see the Myths & Legends Widget Reference Page.