If you are looking for mermaid videos that are cartoons, you've come to the wrong place. This is a terribly sad but interesting video about Shiloh Pepin who suffered from a rare condition called sirenomelia. Though Shiloh has now passed away, it is really interesting to learn about her courageous life. Sirenomelia causes a baby's legs to be fused together in the womb. It is rarely survivable without surgery. Shiloh lived an amazing ten years with the condition and made many mermaid videos to document her life.