The fish-man of Liérganes (Spanish: hombre pez), is a cryptid which belongs to the mythology of Cantabria, located in the north of Spain. The fish-man of Liérganes would be an amphibian human-looking being, a metamorphosis of a real human being who was lost at sea. His story was examined by the enlightened writer Benito Jerónimo Feijoo, who somehow claimed that the story of the fish-man of Liérganes was true.

Feijoo, B.J., (1726-1739) “Teatro Crítico Universal”. [1] Marañón, G. (1934), “Las ideas biológicas del padre Feijoo”, Madrid: Espasa-Calpe. 335pp.