KIOST to use seagrass as living breakwaters to combat East Sea erosion

The Korea Institute of Ocean Science and Technology (KIOST) has launched a project to combat coastal erosion in the East Sea using seagrass as a ‘living breakwater.’ Supported by the Ministry of Science and ICT, the initiative will invest approximately 24.7 billion won over five years starting in 2027.

The project focuses on utilizing native seagrass species, such as Zostera marina and Zostera japonica, which grow at depths of 6 to 25 meters. These plants act as natural infrastructure by reducing wave energy with their dense leaves and anchoring sand with their roots. This method aims to address simultaneous issues of sand loss, ecosystem degradation, and declining fishery resources.

The research will be conducted in two stages. From 2027 to 2029, researchers will use AI, satellites, drones, and underwater sensors to map seagrass distribution and measure wave reduction. The second stage, from 2030 to 2031, will involve creating actual seagrass habitats to verify effectiveness. The ultimate goal is to reduce areas of serious or concerning erosion by 30% and increase marine biodiversity by 30% in demonstration areas by 2031.