Reef HQ is the largest living coral reef

Coral reef

Coral reefs are underwater structures made from calcium carbonate secreted by corals. Coral reefs are colonies of tiny living animals found in marine waters that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The polyps...

 aquarium

Aquarium

An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants...

. It is located in Townsville, Queensland

Townsville, Queensland

Townsville is a city on the north-eastern coast of Australia, in the state of Queensland. Adjacent to the central section of the Great Barrier Reef, it is in the dry tropics region of Queensland. Townsville is Australia's largest urban centre north of the Sunshine Coast, with a 2006 census...

, Australia. The aquarium was built as a Bicentennial Commemorative project and is a part of the Great Barrier Reef Marine Park Authority (GBRMPA). The Coral Reef Exhibit has 130 coral

Coral

Corals are marine animals in class Anthozoa of phylum Cnidaria typically living in compact colonies of many identical individual "polyps". The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.A coral "head" is a colony of...

 species and 120 fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 species along with hundreds of species of sea star

Sea star

Starfish or sea stars are echinoderms belonging to the class Asteroidea. The names "starfish" and "sea star" essentially refer to members of the class Asteroidea...

s, sea urchins, sea cucumbers, brittle star

Brittle star

Brittle stars or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish. They crawl across the seafloor using their flexible arms for locomotion. The ophiuroids generally have five long slender, whip-like arms which may reach up to in length on the largest specimens...

s, feather stars, snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, worm

Worm

The term worm refers to an obsolete taxon used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, and stems from the Old English word wyrm. Currently it is used to describe many different distantly-related animals that typically have a long cylindrical...

s and sponges.

Description

Reef HQ Aquarium is inclusive of the Coral Reef Exhibit, a Predator Exhibit, a children's section, a gift shop and cafe. In 2006 Reef HQ opened new 'Exploring our Wetlands' interactive kiosks developed by the Great Barrier Reef Marine Park Authority.

Location

Reef HQ Aquarium is located in the same complex as the Museum of Tropical Queensland

Museum of Tropical Queensland

The Museum of Tropical Queensland is a museum of natural history, archaeology and history located in Townsville, Queensland, Australia. It is located in the same complex as the Reef HQ Aquarium...

 and the Townsville Aboriginal and Torres Strait Islander Cultural Centre

Townsville Aboriginal and Torres Strait Islander Cultural Centre

The Townsville Aboriginal and Torres Strait Islander Cultural Centre is a cultural exhibit venue for the Indigenous community in North Queensland, located in the Reef HQ Complex in Townsville's City Centre, it showcases Aboriginal and Torres Strait Islander history, culture, traditions and...

 and an IMAX

IMAX

IMAX is a motion picture film format and a set of proprietary cinema projection standards created by the Canadian company IMAX Corporation. IMAX has the capacity to record and display images of far greater size and resolution than conventional film systems...

 theatre in the Central Business District. Over 110 000 visitors tour Reef HQ Aquarium every year.

Coral Reef Exhibit

Water motion is created in the Coral Reef Exhibit by a pneumatic wave

Wave

In physics, a wave is a disturbance that travels through space and time, accompanied by the transfer of energy.Waves travel and the wave motion transfers energy from one point to another, often with no permanent displacement of the particles of the medium—that is, with little or no associated mass...

 machine. Unusually, the aquarium is open to the weather, receiving precipitation

Precipitation (meteorology)

In meteorology, precipitation In meteorology, precipitation In meteorology, precipitation (also known as one of the classes of hydrometeors, which are atmospheric water phenomena is any product of the condensation of atmospheric water vapor that falls under gravity. The main forms of precipitation...

, sun

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

- and moonlight

Moonlight

Moonlight is the light that reaches Earth from the Moon. This light does not originate from the Moon, but from sunlight. The Moon does not, however, reflect sunlight like a mirror, but it reflects light from those portions of its surface which the Sun's light strikes. See diffuse reflection.In...

, just like natural coral reefs. The tank holds approximately 2.5 million litres of water

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

.