Scientists at Israel’s Ben Gurion University have created a new compound by combining copper with a polysaccharide derived from the marine red microalga Porphyridium sp. The long, dense spikes on the surface of the compound kills bacteria and fungus by poking holes in their membranes.

https://in.bgu.ac.il/en/pages/news/red_algae.aspx

https://www.mdpi.com/1660-3397/20/12/787