Researchers at the RIKEN Center for Emergent Matter Science and the University of Tokyo announced a new plastic material that dissolves in seawater within hours in June 2025.
The plastic maintains the strength of conventional plastics but decomposes into harmless components when exposed to saltwater, which are then broken down by bacteria.
The material also degrades in soil, taking just over 200 hours to disintegrate.
This announcement coincided with World Environment Day on June 5, 2025, which focused on "#BeatPlasticPollution."
The researchers have not yet detailed any plans for commercialization, but the discovery has generated significant interest, particularly for packaging.
The United Nations Environment Programme (UNEP) has warned that plastic waste in the oceans could triple by 2040.
The team is now investigating coating methods to improve durability and expand applications.