In a breakthrough that could change how we fight ocean pollution, Japanese scientists have developed a revolutionary plastic that fully dissolves in seawater — in just a few hours.

The innovation comes from researchers at the RIKEN Center for Emergent Matter Science and the University of Tokyo. Their new material is non-toxic, carbon-neutral, and strong enough to rival traditional plastics. Unlike conventional plastic, which can linger in the ocean for centuries, this biodegradable version breaks down completely in saltwater with a little agitation, leaving no harmful microplastics behind.

What’s more, it doesn’t emit carbon dioxide during decomposition, doesn’t burn easily, and has minimal impact on marine life. The team is now working on developing an outer coating to make it usable for packaging and other industrial purposes.

With plastic pollution expected to triple by 2040, this couldn’t come at a better time. Oceans currently suffer from millions of tons of plastic waste each year, devastating marine ecosystems and threatening biodiversity.

This invention offers a realistic path forward — one that combines human ingenuity with environmental responsibility. As lead scientist Takuzo Aida puts it: our duty is to leave behind a cleaner, safer world for the generations to come.