One of my favourite folk tales from back home is the Wild Man of Orford, a small coastal village not far from where I grew up. In the 12th Century, a group of local fishermen hauled their nets to discover they’d caught a strange naked man covered in greenish hair. He was taken to the nearby castle for interrogation, but after six months his torturers realised he wasn’t able to speak.
After that they let him exercise in the sea, stringing nets across the harbour so he couldn’t escape. The Wild Man easily swam under them, but each time he returned willingly to the castle. Eventually, he tired of life on the land, slipped under the nets one last time and vanished out to sea.
A similar water-dwelling character from the landlocked Czech Republic is the vodník, or hastrman, a water goblin popular in fairytales and made famous by folklorist Karel Jaromir Erben in his collection of ballads, Kytice. The creature lives in bodies of water and is capable of drowning the unwary if he’s in a bad mood, or providing bumper catches of fish for the locals if kept happy with sacrifices and offerings…