Aqua Eddy: the whirlpools from under water

A whirlpool in the Naruto Strait, seen from above: the water Aqua Eddy sails roundPhoto: Hellbuny / CC BY-SA 3.0
Aqua Eddy is a 46-seat semi-submersible: passengers sit below the waterline and watch the whirlpools through side windows.
- Getting there
- Naruto Kanko Kisen, Kameura; taxi from Akaishi about 45 min, our estimate
Checked · Researched, not yet visited · times from official timetables and our estimates · Takumi Yamada
Reservation required: a 46-seat semi-submersible that takes you round the whirlpools with windows below the waterline; sailings every 30 minutes 9:15–16:15, about 25 minutes, adult ¥2,500. Out of service 1–23 December 2026 for its statutory inspection; the Wonder Naruto boat runs then.
- 3 hr door to door needs a 5-hour call: a 2–3 hour stop cannot hold it. Pick something closer instead.
Where the 3 hr goes
The hour before all-aboard is not in this bar; it is already set aside. The minutes are our estimates from timetables and maps, not timed on the ground.
If your ship is late, cut the 1 hr 40 min in the middle. Never cut the hour at the end.
What to put beside it
Each of these still lands you back aboard with the hour to spare.
Do · ~3hNaruto whirlpools by boat
The tide pours through the Naruto Strait at up to 20 km/h and throws up whirlpools 20–30 m across at spring tides.
See the detail
See · ~4.5hOtsuka Museum of Art
Western masterpieces from 26 countries, reproduced at full size on ceramic boards, with a walk-in copy of the Sistine Chapel.
See the detail