Plastic also visibly in rocks on the beach: https://www.youtube.com/watch?v=Z5UoVDxjG1g
https://www.science.org/content/article/rocks-made-plastic-f...
And invisibly in trees: https://www.waldwissen.net/en/forest-ecology/climate-and-env...
Pick your favorite Disney movie, the beautiful nature in it is now infused with plastic.
Plastic is a source of energy. I am sure that we need to gameplan for a post-plastic world in the future after some bacteria/fungi learn to eat it