Synonyms and related words :
Davy, Davy Jones, Neptune, Nereid, Oceanid, Oceanus, Poseidon, Thetis, Triton, fresh-water nymph, kelpie, limniad, man fish, mermaid, merman, naiad, nix, nixie, ocean nymph, sea nymph, sea-maid, sea-maiden, siren, undine, water god, water spirit