HYOGO, Feb 16 (News On Japan) –
A ceremonial “whirlpool opening” was held within the Naruto Strait on February fifteenth, between Naruto City in Tokushima Prefecture and Awaji Island in Hyogo Prefecture, marking the beginning of the spring tourism season, with large whirlpools forming beneath the Onaruto Bridge that spans the strait.
The Naruto whirlpools are at their most spectacular throughout spring and autumn when tidal variations are biggest, significantly throughout spring tides, with some vortices reaching diameters of round 20 to 30 meters.
Source: Kyodo