The Osaka Aquarium Kaiyukan is an aquarium located in Osaka, Japan, near Osaka Bay.
  Kaiyukan is a vertically long aquarium having each exhibit in a spiral manner from the top. While climbing down the building from the 8th to the 3rd floor, visitors enjoy a tour of the Pacific Ocean based on this theme.
 It is one of the largest public aquariums in the world, and is a member of the Japanese Association of Zoos and Aquariums (JAZA).
The aquarium is next to the Tempozan Ferris Wheel
 It offers a beautiful view of Osaka Bay and surrounding areas.
 The wheel has colored lights that provide a weather forecast for the next day. Orange lights indicate a sunny day, green lights a cloudy day and blue lights are to indicate rain.
 Back at Kaiyukan, The walk-through aquarium displays marine life in several habitats comprising 27 tanks in 16 main exhibits with a total volume of 10,941 tons of water. 
 The habitats are from the Ring of Fire area of the Pacific Ocean.
  The largest tank is 9 metres (30 ft) deep and holds 5,400 cubic metres (190,699 cu ft) of water and a variety of fish including manta rays and a whale shark.
  “The Ring of Fire” is the circum-Pacific volcano belt which surrounds the Pacific Ocean. It overlaps “The Ring of Life” with its high-density biodiversity.

With the concepts suggested by these two “Rings”, Kaiyukan recreates natural environment around the Pacific Ocean as faithfully as possible.

 The tanks used in the aquarium are made of  346 tons of acrylic glass. The largest single pane measures six meters by five meters by thirty centimeters and weighs roughly 10 tons.
 At that thicknesses used, regular glass would be unwieldy and would not have the desired transparency. Hence the decision to use acrylic.
 The guiding principle of Kaiyukan is based on the theory, “The Gaia hypothesis”, which proposes that “all organisms and their inorganic surroundings on Earth are closely integrated to form a single and self-regulating complex system.”
 Here, you’ll meet a wide variety and number of animal species and plants of the Pacific Ocean 
 Inside the aquraium
 Theres a cozy little cafe with great views of Osaka bay, right in the middle of the aquarium.
 Kinda feels like you’re looking at another world, from under the sea.
There are 15 different sections in this aquarium.
 The themes, displays and their respective organisms at Kaiyukan are as follows;
Aqua Gate; 
Colorful schools of fish playing around this tunnel come from tropical and subtropical seas. This fantastic blue world will attract you.
★Cow nosed ray, Damselfish, Mottled spinefoot and other small fishes.
Water volume: 140 tons
Water temperature: 21 degrees C
Tunnel length: 11 meters
Area: 63 square meters
Forest of Japan;
Forest rains gather in rivers flowing to the sea.
Enjoy the green forests, river fish and shore living things of Japan’s inland areas.
★Chinese Giant salamander, Japanese Giant Salamander, Char.
★Satsukimasu Salmon,Red spotted masou trout, Oriental small clawed otter.
 ★Zelkova Serrata Keyaki, Japanese Maple Momiji, Strawberry geranium.
Water volume: 60 tons
Temperature is the same as outside the aquarium
Water temperature: 15 – 23 degrees C
Area: 430 square meters
 Aleutian Islands;
   This tank re-creates the harsh, rocky environment of Aleutian Islands, where the water temperature ranges from 2 to 10 degrees C. The playful Sea Otters are very popular too.
 ★Sea otters, Rainbow Trout, Scorpion fish and more.
Water volume: 250 tons
Temperature: 13 degrees C
Water temperature: 10 degrees C
Area: 50 square meters
Monterrey Bay;
A variety of marine mammals live along the California coastline. This display offers a rare chance to see underwater behaviors of sealions and harbor seals.
★Harbor seal, California sealion 
 Water volume: 1,050 tons
Temperature is the same as that of the outdoors
Water temperature: 18 degrees C
Area: 250 square meters
Panama Bay;
The Gulf of Panama display replicates a tropical rainforest in a dry season with Ring-Tailed Coati and tropical reef fish.
 ★Porcupine fish, Sloths
 Water volume: 500 tons
Temperature: 26 degrees C
Water temperature: 22 degrees C
Area: 50 square meters
Ecuadorian Jungle;
Deep in the heart of Amazon, you’ll be able to find the world’s greatest diversity of plant and animal life, in this Ecuador rain forest section .
★Arrowana , Iguana, Squirrel Monkey and Capybara
 Water volume: 250 tons
Temperature: 26 – 30 degrees C
Water temperature: 26 degrees C
Area: 150 square meters
Penguins live in frozen rocks and ice. Visitors can see different types of Penguins gracefully swimming under the water, as if they fly through the air.
★King penguin, Gentoo penguin
Water volume: 350 tons
Temperature: 0 – 3 degrees C
Water temperature: 10 degrees C
Area: 50 square meters
 Tasmanian Sea;
Visitors to this tank can see dolphins swimming in the warm water.
★Pacific whitesided dolphin
Water volume: 1,350 tons
Temperature: 10 – 26 degrees C
Water temperature: 18 – 23 degrees C
Area: 260 square meters
Great Barrier Reef;
This tank faithfully imitates the world’s largest coral reef that extends 2,000 kilometers along the eastern coast of Australia.
★Butterflyfish, Damselfish, Brownbanded bamboo shark, Pearl spot chromis
Water volume: 450 tons
Water temperature: 26 degrees C
Area: 60 square meters
The Pacific Ocean;
This is the largest tank in this aquarium with 9 meters deep, and 5,400 tons of water. You will never forget the whale shark swimming in this tank.
★Whale shark, Manta Ray, Bluefin Tuna, Spotted eagle Ray and other large fish of similar size.
Water volume: 5,400 tons
Water temperature: 23 – 24 degrees C
Area: 620 square meter
Seto Inland Sea;
Not a large ocean though, this sea has many faces, and is a home for wide variety of living things. Many kinds of species live in this local area.
 ★Sea bream, Olive flounder, Common octopus
 Water volume: 150 tons
Water temperature: 17 degrees C
Area: 40 square meters
Cook Strait;
Sea turtles and fish from Cook Strait that separates the northern and southern islands of New Zealand are exhibited.
★Loggerhead sea turtle, Green sea turtle, Pink maomao, Blue maomao
Sea Tortoises and other species
Water volume: 350 tons
Water temperature: 18 degrees C
Area: 40 square meters
Deep sea Zone;
No sunlight reaches the quiet, dark, and deep sea.
The largest crab species living on the trench slope of 200-400 meters below the sea level are exhibited.
★Giant spider crab, Snipe fish
Water volume: 80 tons
Water: 11degrees C
Area: 40 square meters
Chilean Rocks;
  Cold currents, flowed from Antarctica, abound in nutrients and produce a lot of plankton on the coast of Chile. Sardines live in groups to eat the plankton.
 ★Sardine, Japanese anchovy, South American pilchard,and other species.
 Water volume: 250 tons
Water temperature: 18 degrees C
Area: 40 square meters
Floating Jellyfish Area; 
In the floor of Floating Jelly Fish, twelve species representing about six hundred specimens centering jelly fishes living in the coast of Japan are exhibited.
Visitors are able to see fantastic appearances of jelly fishes floating in twelve tanks.
Different varieties of Jellyfish
 ★Brown jellyfish, Moon jelly, Tima Formosa, Pacific Sea Nettle, etc.
Water volume: 11 tons in total in 12 tanks
Area: 289 square meters
More pictures from the exhibits!

About Joshua Hideki

Hi! I'm Hideki. You can call me Josh! ʕ•ᴥ•ʔ Welcome!!~ This is a Travel Blog covering Japan, and many other bits & pieces of my personal life. Photography, Blogging, Fashion & Traveling in Style. A travel guide for everyone with these passions. Absorb the mesmerizing atmosphere, take in amazing sights & let the enchanting ambiance take you away as you embrace different cultures & see the world through my eyes - my Eternal Memories. Visit my Blog at: ! Come discover Japan from the inside with me and also we'll provide you with the best destinations to visit; and that includes the rest of the World too! Please enjoy! Discover Japan & Travel the World with me!! Life is precious, you only have one so live it to the fullest!

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