Arethusa means "the waterer".
Coin from Syracuse 5th century BC, Arethusa, galloping quadriga driven by charioteer; Nike flying above, crowning the charioteer
2. A nymph, daughter of Nereus (making her a Nereid), Arethusa ran from a suitor, Alpheus, the river god, making her way to Sicily. Artemis changed her into a fountain. Alpheus swam underground and mingled his waters with hers.
The Fount of Arethusa (Source)
The Fount of Arethusa, in the Ortygia island. a fountain near Syracuse, Sicily. According to a legend, the nymph Arethusa, hunted by Alpheus, took shelter here, turning into a fount
Arethusa occasionally appeared on coins as a young girl with a net in her hair and fish around her head.
Arethusa , Greece, 10.000.000.000 Drachmae (Inflation) 1944
Asteroid 95 Arethusa