Perseus finds the Stygian Nymphs at the entrance to the underworld. When he threatens to reveal their location, they agree to lend him the helmet of invisibility, the winged sandals and the magic bag to hold the head of Medusa.
Perseus and the Sea Nymphs, ca. 1876 Edward Burne-Jones (1833-1898) gouache on paper, 152.8 x 126 cm, Southampton City Art Library, England