Today's Image of the Day from NASA Earth Observatory features the Geiyo islands in the Seto Inland Sea, the body of water that separates the main islands of Japan.  "Whirlpools and other complex currents routinely roil Japan’s Seto Inland Sea. Strong tidal currents send water churning through a maze of channels and narrow straits surrounding thousands of islands in the shallow sea. The islands of the Geiyo archipelago are among them," reports NASA. "On May 30, 2021, the Operational Land Imager (OLI) on...