Sometimes the thick foam looked like lava:
Other times it leaped and splashed into unusual shapes and patterns. The next three images reminded me of different paintings.
Hokusai's The Great Wave off Kanagawa
Edvard Munch's The Scream
Jackson Pollock's Number 13A: Arabesque
Do you see other paintings or figures in the foam?
P.S. As I was looking up some information about Jackson Pollock, I came across this fun web page. You can create your own Pollock-like painting online. Check it out (click to change colors)!