The Pleiades, companions of Artemis, were the seven daughters of the titan Atlas and the sea-nymph Pleione born on Mount Cyllene. They are the sisters of Calypso, Hyas, the Hyades, and the Hesperides. The Pleiades were nymphsin the train of Artemis, and together with the seven Hyades were called the Atlantides, Dodonides, or Nysiades, nursemaids and teachers to the infant Bacchus.
There is some debate as to the origin of the name Pleiades. Previously, it was accepted that the name is derived from the name of their mother, Pleione. However, the name Pleiades may derive from πλεῖν (to sail) because of their importance in delimiting the sailing season in the Mediterranean Sea.