The ancient evolution of fish mouths could help solve a modern source of plastic pollution.

Inspired by these natural filtration systems, scientists in Germany have invented a way to remove 99 percent of plastic particles from water. It’s based on how some fish filter-feed to eat microscopic prey.

The research team has already filed a patent in Germany, and in the future, they hope their creation will help curb a ubiquitous form of plastic pollution that many are unaware of.