This is Amabie, a Japanese yokai or spirit. She is a three legged mermaid with a body covered in scales and a beak nose who comes out of sea to prophesize good harvests and pandemics. Keeping a drawing of an Amabie is suppose to ward off the pandemic. "Draw a picture of me and show it to those who fall ill and they will be cured. Please download Amabie or draw your own.