Psamathe (Ancient Greek: Ψάμαθη, from ψάμαθος "sand of the sea-shore"), in Greek mythology, was the goddess of sand beaches as a Nereid, i.e., one of the fifty daughters of the sea god Nereus and the Oceanid Doris. She was the mother of Phocus by Aeacus and later became the wife of Proteus. By the latter, she gave birth to a son, Theoclymenus who became a king of Egypt, and a daughter, Theonoe (Eido).
Some translations of Ovid have the name as Psamanthe.
In modern times
Psamathe has a moon named after her.
- Euripides, The Complete Greek Drama, edited by Whitney J. Oates and Eugene O'Neill, Jr. in two volumes. 2. Helen, translated by Robert Potter. New York. Random House. 1938. Online version at the Perseus Digital Library.
- Euripides, Euripidis Fabulae. vol. 3. Gilbert Murray. Oxford. Clarendon Press, Oxford. 1913. Greek text available at the Perseus Digital Library.
- Publius Ovidius Naso, Metamorphoses translated by Brookes More (1859-1942). Boston, Cornhill Publishing Co. 1922. Online version at the Perseus Digital Library.
- Publius Ovidius Naso, Metamorphoses. Hugo Magnus. Gotha (Germany). Friedr. Andr. Perthes. 1892. Latin text available at the Perseus Digital Library.