Detail from the full image below.
Just for fun: Samurai underwater combat! Imagined underwater fighting, both via surface supplied air (“deep sea diving”) and free swimming descents, during the very real Battle of Yalu River in 1894. Japanese forces defeated a Chinese fleet in a very close battle during the First Sino-Japanese War. The underwater imagery is, of course, quite imaginary but also quite cool.
Underwater battle during the Battle of Yalu River by Kobayashi Toshimitsu, 1894. Rijksmuseum.
Swordplay & Swashbucklers 