If the tide is 50 cm or less, you can see the Tombolo
Sanshiro-jima islands in Nishiizu-machi, Shizuoka Prefecture is a collective term for four islands, Zo-jima, Nakano-shima, Okinose-shima, and Takashima, which are located about 200m off the coast of Dogashima.
Since Okinose-shima and Nakano-shima are connected when the tide is out, they are regarded as one island, sometimes just called “Nakanoshima”.
During the low tide, you can see the “Tombolo”, a rocky area with a width of about 30m which appears and stretches from land to the nearest island, Zo-jima, allowing you to cross the sea on foot without even getting your feet wet.
The Tombolo is a phenomenon in which the sea floor between land and an island usually separated by the sea appears and connects them, only during the season when the tides are low.
A famous example is Mont Saint-Michel in France.
If the tide is 50 cm or less, you can see the Tombolo.