South Korea's ocean life is slowly being depleted in a process called desertification, leading to the destruction of more than 60 percent of marine plants along more than 60 percent of the eastern coastline.  

Desertification destroys sea forests of algae, such as seaweed and kelp, which are vital to ecosystems. 

Some experts say the cause is linked to climate change and pollution. 

TRT World's Joseph Kim reports.