Marc Quinn has made the following sculptures of his own head from frozen blood. Each head was made by 4.5 L of his own blood. The blood was taken from his body over a period of 5 months. It is carefully maintained in a fridge. The artists makes a new head every 5 years, to document his own physical transformation and deterioration.
Another artist: Fantasy Mermaid Sculptures by Cameron Stalheim
That’s pretty metal.