How Japanese raise millions of sea pineapples

The Sea Pineapple (Halocynthia roretzi), known as "Hoya" in Japan, is a stalked edible tunicate (ascidian) highly prized in East Asian cuisine. Due to its unique "five tastes"—sweet, salty, sour, bitter, and umami—it is considered a delicacy that tastes like the ocean. This video explores the sophisticated marine engineering and biological management required to raise millions of these organisms in the waters of Northern Japan.