[8] The aquarium is about a five-minute walk from Osakako Station on the Osaka Municipal Subway Chūō Line, and is next to the Tempozan Ferris Wheel.

[7] In 1988, with the aim of redeveloping the Osaka Bay Area, the Kaiyukan and Tempozan Marketplace were to be built following the success stories of aquariums and commercial facilities overseas.

[11] Visitors will go up to the eighth floor on the escalator, passing through the Aqua Gate, a tunnel tank with various tropical fish.

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 and these include the Aleutian Islands (tufted puffins), Monterey Bay (California sea lions and largha seals), Gulf of Panama (ring-tailed coati, long-spine porcupinefish and blotcheye soldierfish), Ecuador Rain Forest (arapaima, red-bellied piranhas, capybara & green iguanas), Antarctica (Adélie, gentoo & king penguins), Tasman Sea (Pacific white-sided dolphins) and Great Barrier Reef (palette surgeonfish, pennant coralfish & threadfin butterflyfish), Seto Inland Sea (common octopus, Japanese spiny lobster & red seabream), Coast of Chile (Japanese anchovies and South American pilchards), Cook Sea Strait (loggerhead sea turtles, deepwater burrfish & scarlet wrasse), Japan Deeps (Japanese spider crabs, elephant fish & Hilgendorf's saucord) and a jellyfish gallery (moon jellyfish & northern sea nettle).

Due to its comically large size and shape, it is reported to be a more popular exhibit at the aquarium than whale sharks.

[17] In addition, the past eight surveys of tagging whale sharks have revealed that they can migrate to the Philippines and dive to a depth of 1,500 m (4,900 ft).

"OBIC" devil rays were trained for health management for transportation to the Pacific Tank, and a large 8-meter-diameter tank was set up on the deck of the ship, The giant devil rays were transported over a long distance from Kochi Prefecture to Osaka under conditions that allowed them to swim freely.

After the pregnancy was discovered, regular ultrasound examinations were used to check the growth of the fetus and to record changes in the mother's abdomen bulge and behavior.

[24] Osaka Aquarium Kaiyukan has a research center "Osaka Aquarium Biological Research Institute of Iburi Center (OBIC)" in Iburi, Kochi Prefecture, where fish swimming tests and animals to be brought in are carried out in tanks with a water volume of 1,600,000 litres (423,000 US gal) and a water volume of 3,300,000 litres (872,000 US gal).

[27] although it was not exhibited at the aquarium, they succeeded in captivity of Pelagic thresher for 26 days at the offshore fish farms in Iburi, Kochi Prefecture.

[12]　 About 100 acrylic panels were used to build the tank, which was produced by four companies: Mitsubishi Rayon, Nippura, Sumitomo Chemical, and Reynolds Group Holdings of the United States.

[33] TV personality Emiko Kaminuma states that it is her role to decide the name "海遊館 Kaiyukan" in Japanese.

If it is expressed in three kanji characters, the meaning will be easier to understand, and it will have an easy-to-understand impact like Dream Factory [ja] (夢工場)."