Researchers at Israel’s Ben Gurion University have developed a porous aerogel made from cellulose fibers that cleans up after oil spills (see here previously). The ‘sponge of the sea’ absorbs 100 times its own weight and cleans itself up afterwards by using oil-eating bacteria to degrade the pollutants.

https://www.jpost.com/environment-and-climate-change/article-908953

https://www.timesofisrael.com/israeli-scientists-develop-huge-sponge-to-mop-up-and-eat-oil-spills/

https://www.sciencedirect.com/science/article/pii/S2666821126003583