Please, take a look on Esanbe Hanakita Kojima - example of disappeared Japan island:
https://www.theguardian.com/world/2018/nov/02/japanese-island-disappears-esanbe-hanakita-kojima
Another example of climate change result. One of its consequences probably will be change of area of Japan exclusive economic zone.
I think the really important question is if currently in force Convention of the Law of the Sea (Montego Bay 1982) fully meets the challenges of the consequences of climate change?
I am very interested in your opinions