
Natural Scenery
Hotaruika Gunyu (Firefly Squid Swarms)
Hotaruika Gunyu
Experience the breathtaking sight of swarms of glowing firefly squid covering the surface of Toyama Bay.ToyamaNatural Scenery
Explore this spot

Guide7 min read
Hotaruika Gunyu is a phenomenon where massive swarms of firefly squid cover the surface of Toyama Bay.
What makes it special
Firefly squid swarmsToyama Bay natureSpawning season phenomenonMarch to June highlightsNatural phenomena by topography
About Hotaruika Gunyu (Firefly Squid Swarms)
- Visit between March and June to witness the incredible sight of firefly squid swarms covering the surface of Toyama Bay.
- This phenomenon is a rare and precious natural event brought about by the unique topography of Toyama Bay.
- We recommend visiting nearby museums, such as the Hotaruika Museum, to deepen your understanding of their ecology.
- Since this is a seasonal natural event, we highly recommend checking the current status and timing before your trip.
Weather forecast
Tue
8/4
31°/26°
94%
Wed
8/5
32°/25°
47%
Thu
8/6
34°/26°
6%
Fri
8/7
33°/24°
59%
Sat
8/8
30°/25°
75%
Sun
8/9
29°/23°
47%
Mon
8/10
29°/23°
22%
Tips
Payment
Cash or Credit Cards (Visa/MasterCard, etc.)
English Support
English guidance available at some facilities
Reservations
No reservation required
Clothing
Wear clothing suitable for the coast and bring wind protection
Photography
Photography of the natural phenomenon is allowed
Accessibility
Steps or uneven terrain may be present depending on the location
Etiquette
Please protect the natural environment and carry out all trash