Oh, wait now.
Hyperrealistic ‘water-filled plastic bags’ formed from glass by artist Dylan Martinez. to wit:
To begin, Martinez sculpts the solid glass or “water” that appears within each bag. Next, he adds a blown bubble to the top which is then smoothed out before he begins to hand sculpt each fold and wrinkle. Once complete, the sculpture is placed in an annealing oven at 510° C and allowed to cool for 120 hours.