The Aquarium of Western Australia is a privately owned aquarium in Hillarys, Western Australia. AQWA was Australia's largest aquarium when it opened and still possesses Australia's largest single aquarium and walk-through underwater tunnel.
The aquarium specializes in marine animals that inhabit the 12,000-kilometre (7,500 mi) long coastline of Western Australia. In total AQWA holds over 4 million litres of water and is home to approximately 400 species of marine life, including more than 4,000 fish.
AQWA is themed as an underwater journey along W.A.'s coastline and is broken up into 5 distinct areas. Each area represents the unique marine life and environments of different regions along W.A.'s coast. These include: The Great Southern, the Shipwreck Coast, the Perth Coast, the Far North and Marmion Marine Park.
The main Shipwreck Coast aquarium is 40 metres (130 ft) long and 20 metres (66 ft) wide and holds 3,000,000 litres (793,000 US gal) of seawater. It incorporates a 98-metre (322 ft) underwater acrylic tunnel, the largest in Australia. This exhibit contains 3-4 metre grey nurse sharks, 4 metre smooth stringrays, large loggerhead turtles and over 70 other species of rays, octopuses, sharks and fish.
Seasonally, AQWA also runs the Reefwalker program, where capable swimmers over the age of 12 are able to enter the coral reef and discover scuba diving. No qualifications are required. Using a custom-made hookah scuba unit, participants are led by an experienced AQWA dive instructor, as they walk underwater through the living reef which features hundreds of corals and fish. It runs Friday¨CSunday between October and April.