Next to Tokushima is Naruto, a city famous for its sweet potatoes, its seaweed, and its whirlpools. Twice a day, as the tide comes in or goes out, the sea gets trapped in the narrow strait between Shikoku and Awaji Island; the result is a spectacle of powerful whirlpools.
The tides aren't always spectacular. However, even on not-so-spectacular days, the whirlpools are amazing.
Either walk out on a walkway under the bridge,
or take one of the tourist boats.
The whirlpools form and dissipate.
Viewing the whirlpools through the beams.
The observation room under the bridge. In December, the crowds are - as you can see - non-existent. No, we were not the only people there yesterday, but the visitors were few. It's cold out on the bridge, and the whirlpools are small. However, we still had a great time.