AQWA: Aqwa is Australia's largest aquarium and underwater tunnel.
(Image credit: rosswebsdale).
The Dubai Aquarium:
Its one of the world's largest Underwater aquarium plus a 270-degree walkthrough tunnel. "The aquarium will eventually house up to 33,000 aquatic animals, including 400 sharks and rays combined."
(Image credit: jpaulop).
"The Oceanarium in Lisbon, Portugal is an oceanarium dedicated to the ocean."
The Okinawa Churaumi Aquarium:
(Image credit: kristi).
The Okinawa Churaumi Aquarium is located in Okinawa, Japan; and it's the world's second largest aquarium. The main aquarium can hold 7,500-cubic meters (1,981,290 gallons) of water and is called the 'Kuroshio Sea'
The Georgia Aquarium:
The Georgia Aquarium, located in Atlanta, Georgia at Pemberton Place. It's billed as the "world's largest aquarium" contains around 8.1 million gallons (31,000 cubic meters) of marine and fresh water.
Monterey Bay Aquarium:
It's located on the Pacific Ocean shoreline in Monterey, California. The central feature of the Ocean's Edge Wing is a 33-foot (10-m) high 1/3 million gallon aquarium for watching California's coastal marine life.
Melbourne Aquarium is located on the banks of the Yarra River. It's a Southern Ocean and Antarctic aquarium in central Melbourne, Australia.
The Oita Marine Center Fish Aquarium:
The moment one sees this fish aquarium one thinks why doesn't the water flow out of the feeding holes in the side of the tank? The answer seems to be quite simple: by reducing the pressure inside the and equaling it with the atmospheric pressure in the half-bowls.