How would you describe the lava in a lava lamp?

I can only think of the word morphing but that is pretty boring and not exactly what I am looking for. I want to talk about the way that they seemingly levitate as it changes and absorbs itself while simultaniously breaking apart

I'm partial to "transmogrify", or it's heftier noun version, "transmogrification" - meaning "to change or alter greatly and often with grotesque or humorous effect" - per MW-O

What astonished me was how old this word is:

Origin of TRANSMOGRIFY (MW-O):

origin unknown

First Known Use: 1656

How about the adjective amorphous? Lacking a defined shape, or having a shape that shifts.