On Sado Island Nichiren Daishonin enshrined the statue of Shakyamuni Buddha That Came From the Sea.
"When I was in the Province of Sado between mountains and wilds far away from a village was a samadhi place called Tsukahara. There was a hall with a single room and four walls in that place. On the roof the boards did not meet and all four walls were ruined. In the rain it was like being outside and the snow piled up inside. There was no Buddha [image]. Neither was there a single reed tatami mat. However, I set up the statue of the Master of Teachings Lord Shakya which I kept from the beginning and grasped the Hokekyo in my hand, put on a straw raincoat and held up an umbrella, yet for four years nary a person appeared to give me food." -- Reply to the Bhikshuni Myoho", STN, v. 2, 15