The image is a photograph of a sign that reads "The Naruto Whirlpools". The sign is white with black text and is attached to a white wall. The text is written in both English and Japanese. 

The sign is titled "Naruto Strait is a 1,340m wide strait between Magazakai on the Naruto side and Takayama Island on the Nara Island. It is located about 200 meters from the Naruto Strait. The naruto strait is a narrow strait that runs between Nagasaki Island and Nagasaki, Japan. It has a steep slope and is located in the middle of the ocean. The water is a deep blue color and the waves are gently crashing against the shore.

There is also a legend on the right side of the sign that explains the meaning of the text. The legend explains that the naruto Strait can be used to get up to 20 meters in diameter and they are said to be the largest whirlpool in the world.