Young scientist Logan Williams became "infatuated" with an invasive algae called didymo, while studying at university. Outraged that his beloved South Canterbury rivers had been destroyed by this "rock snot", Williams developed an idea to turn it into recyclable consumer goods, such as plates and cups. Williams was a 2018 finalist for Young New Zealander of the Year Award; he has also developed polarised contact lenses for people with photosensitive epilepsy. This Loading Docs short documentary is directed by commercials producer Jane Mahoney.