“Mohang” is based on the massive oil spill of Samsung Heavy Industries in December 2007 in South Korea. 
Mohang, a small port located in Sowon-Myeon, Taean –gun, in South Korea, is the one of most seriously damaged regions from the accident. 
As shooting along the seaway from Uihang to Mohang in the perspective of fish, I would ask what they are seeing under the sea.