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Underwater observation tower



Underwater tower

The blue and clear world extends in the bottom of the sea of 5 meter deep. Visitors can observe corals and colorful fishes directly through 40 windows.



Fishes observed in Underwater observation tower


The fishes observed from the tower are natural ones. So the species and the number of fishes vary in the time, day and season. More than 270 species of fishes have been recorded through the windows so far. Visitors can always observe 20-40 species of fishes all the year.

Green moon wrasse
Green moon wrasse
Butterfly fish
Butterfly fish
Heavenly damselfish
Heavenly damselfish
Anemone fish
Anemone fish
Girella
Girella


Underwater tower Live image

The underseascape around the tower can be seen on the Internet. This image is shot by the one of the cameras installed by Ministry of the Environment and can be updated once in 1 hour in the daytime. Not only the latest image but also the past images are accumulated as a database and user can search the image of the specified date. Images can be seen at the website "Internet Nature Information System" managed by Ministry of the Environment Government of Japan. Present image is here!



Water temperature and transparency

Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Temperature (°C) 17.8 16.7 17.2 18.5 20.7 22.8 25.5 27.5 26.6 24.1 21.9 19.6
Transparency (m) 21.5 19.6 14.3 13.8 14.8 12.7 12.0 11.5 12.2 15.3 18.5 20.6


Number of fish species

Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.
Average 41 34 32 33 36 35 35 39 44 48 48 45
Min. 23 16 17 23 24 22 25 26 26 29 33 23
Max. 60 51 48 45 49 48 58 56 64 65 70 63



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