This is a video from the Backyard Scientist demonstrating the shapes made when you pour molten aluminum into an aquarium full of water polymer beads. You know, in case you were considering pouring molten aluminum into an aquarium full of water polymer beads but didn't want to wast your time if it's not going to turn out very cool looking. Thankfully, the results are pretty cool looking. They kind of remind me of coral and octopus tentacles. Speaking of octopus tentacles -- have you ever actually felt an octopuses sucker on you before? I have. Back me up, Ursula! "He's lousy in bed." YOU STOLE MY PENIS.
Keep going for the video.
Thanks to Nate H, who is going to start pouring molten aluminum in aquariums filled with all sorts of different things then buy a booth at all the local craft fairs and make a killing.