Shikoku Aquarium in Utazu, Kagawa Prefecture is currently hosting "Rainy Season Singing Frogs" (梅雨に鳴くカエル展), a special exhibition spotlighting frogs that become active during the rainy season. The exhibition runs from May 29 (Fri) to July 12 (Sun), 2026.
Seven Frog Species from Kagawa on Display
The exhibition features seven species of frogs that can be found in Kagawa Prefecture and are known for calling during the rainy season.
From left: Japanese tree frog (ニホンアマガエル), Japanese brown frog (ツチガエル), and Tokyo daruma pond frog (トノサマガエル)
The exhibition area includes interactive buttons that play each frog's call, allowing visitors to listen to and compare the sounds while learning about the differences and ecology of each species.
A Rare Blue Japanese Tree Frog
From June 5 (Fri), a blue Japanese tree frog joined the exhibition. The individual was discovered in mid-May in Donarichō, Awa City, Tokushima Prefecture, and donated to the aquarium by the person who found it.
Blue Japanese tree frog
The blue coloration is thought to be caused by an absence or extreme concentration of yellow pigment cells in the skin. In the wild, the blue color makes the frog more visible to predators, making survival difficult — which is why such individuals are considered extremely rare.
Exhibition Details
- Period: May 29 (Fri) – July 12 (Sun), 2026
- Location: Shikoku Aquarium, Main Building 1F, next to "Kannazuki no Kei"
- Species on display: Japanese tree frog, Schlegel's green tree frog, Japanese brown frog, Nakanuma brown frog, Tago's brown frog, Kajika frog, Tokyo daruma pond frog
- Tank count: Three 45 cm tanks
- Note: Display contents may change or end without notice depending on the condition of the animals.
Limited Edition Fish Stamps (魚朱印) Also Available
A special-edition fish stamp featuring an original design for the Rainy Season Singing Frogs exhibition is on sale during the exhibition period.
- Sales period: May 29 (Fri) – July 12 (Sun), 2026
- Sales location: Dolphin Building 1F, Information Counter
- Price: ¥300 (tax included)
- Sales hours: From opening until 30 minutes before closing
- Design: A6 size (8 cm × 10.5 cm), printed on Japanese paper with the date filled in by staff on the spot
Visitor Information
- Address: 4 Hamaichibanchō, Utazu-cho, Ayauta-gun, Kagawa
- Regular hours: 9:00 AM – 6:00 PM (last admission at 5:30 PM)
- Admission: Adults (high school students / 16 and over) ¥2,600; Elementary & junior high school students ¥1,400; Children (ages 3 and up) ¥700; Under 3 years old free
- Access: Approximately 1 km from JR Utazu Station (about 12 min on foot); approximately 10 min from Sakaide IC or Sakaide-Kita IC
- Website: https://shikoku-aquarium.jp/
