While fireflies are often associated with beautiful riverbanks in the summer, the Yaeyama region of Okinawa Prefecture is home to a type of terrestrial firefly that can be seen from spring to early summer (March to May). It's called the "Yaeyama Himebotaru" (Yaeyama dwarf firefly).

They emit a brilliance unimaginable from their tiny bodies, and when thousands gather in a flock, they truly resemble a natural illumination.

It has become such a popular early summer tradition that night tours are held every year.

This time, we'll introduce places and times when you can see Yaeyama fireflies, as well as some points to keep in mind when viewing them.

What is the Yaeyama firefly?

The Yaeyama firefly is a terrestrial firefly that inhabits only the Yaeyama Islands, including Ishigaki Island and Iriomote Island.

While fireflies commonly found on Honshu live near rivers, the Yaeyama firefly thrives in forests with fallen leaves and decaying leaves.

With a body length of approximately 2-5 millimeters, it is about the size of a grain of rice, making it the smallest firefly species in Japan.

Females lack wings and therefore cannot fly. Males also have very weak flying abilities, and their range of activity is extremely limited; they can only be seen in a limited number of spots, even on Ishigaki Island and Iriomote Island.
A key characteristic of the Yaeyama firefly is that it can only be seen for a short time after sunset. It flies around at low altitude, flashing rapidly at a rhythm of about three times per second, and then suddenly stops glowing after about 30 minutes.
They don't fly high, but instead soar slowly just above the ground, creating a scene like a carpet of light spread across the forest. The sight of countless fireflies fluttering about, emitting their beautiful light, is truly a marvel of nature.

Places where you can see Yaeyama fireflies

While it's recommended to join a tour to see the Yaeyama fireflies, this time we'll introduce some firefly viewing spots on Ishigaki Island that are easily accessible for tourists.
It gets completely dark after sunset, so don't forget your flashlight.

Firefly Route in Banna Park

Banna Park is a nature park rich in natural beauty, located on Banna Mountain in the center of Ishigaki Island. It's conveniently located just a 10-minute drive from the city center where many hotels are concentrated, making it easily accessible even for those traveling on their own.
To see the fireflies, take a walk along the "Firefly Road" located in Zone D of Banna Park, and you'll arrive at a spot where you can see the Yaeyama fireflies.
It takes about 15 minutes to walk from the nearest Building D parking lot to Firefly Street.

Near Maesedake Observatory

Maesedake Mountain is home to the Ishigaki Island Astronomical Observatory, a popular tourist spot where you can learn about the starry sky of Ishigaki Island. Yaeyama fireflies can also be found near the "Maesedake Observatory" along the way. It's a more hidden gem compared to Banna Park, but the road is quite dark and narrow, with one-way streets, so please drive carefully!

Omotodake

There's a spot where you can admire the Yaeyama firefly on Mount Omoto, known as the highest mountain in Okinawa Prefecture. The location is near the forest road at the trailhead. A night tour where you can observe the rare, endemic creatures that inhabit Mount Omoto is also recommended.

Points to note when viewing

You can see Yaeyama fireflies for about 30 to 40 minutes after sunset. If you miss this timing, the number of fireflies flying around will decrease significantly, so it is recommended to arrive early.

Also, please note the following points when viewing the Yaeyama fireflies.

Do not point camera or smartphone flashes or flashlights at fireflies.
Do not use insect repellent sprays or mosquito coils in their habitat.
Do not make noise or touch the fireflies.

The lifespan of the Yaeyama firefly is only about a week. During this short period, they rely on flashing lights to find a mate, mate, and pass on life to the next generation, so please observe them quietly without causing any stress that might interfere with mating. If you are viewing them with children, it is a good idea to make an agreement beforehand, such as "don't make loud noises," before entering.

In densely wooded areas, dangerous creatures may appear after sunset. To protect your skin, wear long sleeves and long pants, sneakers or boots, and be sure to bring rain gear such as a raincoat to prepare for sudden rain.

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