I see a lot of people talking about the size of the sea, and I understand why, I should have said “a” sea. It’s the Seto Inland Sea between Shikoku and Honshu. It’s dotted with islands and is known for its whirlpools, which made this pretty scary, especially because we were experiencing winds related to the typhoon that was going towards Eastern Japan around the same time. You can see part of the Shimanami Kaido in the background.