Japan 's coastline erosion

Reference:

https://www.google.com/maps/@43.3849439,145.8160256,3a,60y,66.07h,89.96t/data=!3m6!1e1!3m4!1sWAiP5t9b7H0-IFg1x6u0cg!2e0!7i13312!8i6656