can water turn into blood or was it an event that has been embellished for readers?

This week I had the opportunity to read Exodus, and I came across some interesting stories that I can go on for days about! The  whole ordeal of the Israelites  escape was enough to make me bite my finger nails at some points (lol)! I could go into how the Isrealites acted after they left Egypt, the ten commandments, but the topic that peeked my interest was the event that occurred in Exodus 7:14! The notion that the water turned into blood made me think to myself " could water actually turn into blood"? It is a question that seemed  unanswerable at first, but then I thought about a story I heard in the news about water turning red a couple years ago. So my mind went into the discussion we had in class on Friday about story telling, and how these writers may have embellished the actual account to make a better story. So my Question is could water actually turn red, and could the writers of the book of Exodus have made the actual account of this event into something far more fascinating such as blood?