Amami Heart Rock 2026: The 40-Minute Tide Window (and Why It Might Be Buried in Sand)

Heart Rock on Amami Oshima only emerges at tides below 80 cm and has been frequently buried by wind-blown sand since May 2025. Practical 2026 guide: how to read the JMA Naze tide table, when the sea lettuce blooms green, and what to wear on the slippery reef.








