plural rusalki
In Slavic folklore and mythology, a water nymph who embodies the soul of either a drowned virgin or a child that died unbaptized.
Details of rusalki s' appearance and behaviour vary widely, but a common feature is that the nymphs attempt to entice men. In some areas, they are the subject of a festival in the early summer, when they are thought to emerge from the water and dance by night. In Antonín Dvořák 's opera Rusalka , a rusalka attempts to marry a human prince but is reclaimed by her element.