The Eridanus Coin, one of the many constellation coins, is found in the Zahhab Region Depths, at coordinates B-3 In the Northern Crevasse. This coin is found to the south of the Secret Passage (the tunnel that connects the two crevasses together) and its zoom-mode glimmer is tucked behind a rock there. This coin shares its 'shine spot' with a pair of Blind Shrimp.
- 'Eridanus' was simply a Latin name for the modern-day Po River that flows across Northern Italy.
- In some pieces of artwork, Eridanus was depicted as flowing from the waters poured by Aquarius.
- In the night sky, they constellation Hydrus, representing a water snake, is placed next to the constellation of Eridanus.