Location: 9CHP+8H Piriac-sur-Mer, France
Undead
by @anton
Two ghosts are said to appear sometimes off the coast of Piriac: two lovers who died tragically and who run along the crest of the waves, visible to fishermen at dusk. Their apparition is believed to foretell a tragic event for those who witness them.
Source :
Mahé Joseph, Essai sur les antiquités du Morbihan, Galles, 1825