When conceiving art for a spa area on an ocean cruise liner, an artist with an interest in Greek culture and mythology is bound to think of Okeanos, the god of the earth-encircling river named after him. With his wife Thetys he fathered innumerable Nymphs, amongst them the Naiads. Embodying the divinity of water source or the stream they inhabit, these water nymphs were formidable healers, as well as treacherous seducers.