👉 In Greek mythology, the Eurydice is a symbol of Hades. It's believed to be an offering made by the god Poseidon to Hephaestus in exchange for his assistance in building the underworld (Hades) and the underworld itself. The Eurydice was said to have been found floating on Lake Nyos, the place where Hades resides, after being swallowed by a fish.