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Australia is bordered by the Indian Ocean to the west and the Pacific Ocean to the east. The Indian Ocean, the smallest of the world's three major oceans, stretches for more than 6,200 miles between the southern tips of Africa and Australia. The Great Australian Bight, a large open bay, is a significant feature of Australia's western coastline and is technically part of the Indian Ocean. The Southern Ocean, which surrounds Antarctica, lies to the south of Australia.
| Characteristics | Values |
|---|---|
| Direction of the Indian Ocean from Australia | East and southeast |
| Southern limit of the Indian Ocean | 60°S, with the waters south of that line identified as the Southern Ocean |
| Indian Ocean's impact on Australia's climate | The Indian Ocean region is essential to Australia's security and prosperity, and it plays a role in responding to shared challenges, including climate change and maritime security |
| Indian Ocean's impact on Australia's marine life | The Indian Ocean supports a rich array of marine life, including the endangered Southern Right Whale, which migrates to the Great Australian Bight to breed in the winter months |
| Indian Ocean's impact on Australia's economy | As a trading hub and economic highway spanning Africa, the Middle East, South Asia, and Southeast Asia, the Indian Ocean is fundamental to maintaining open trade and energy security for Australia |
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What You'll Learn
Australia is an Indian Ocean country
Australia has one of the Indian Ocean's longest coastlines, the largest Search and Rescue Zone, and the largest Exclusive Economic Zone. The Indian Ocean region is strategically significant and fundamental to Australia's security and prosperity. It is a trading hub and economic highway spanning Africa, the Middle East, South Asia, and Southeast Asia, and is essential for maintaining open trade and energy security.
The Indian Ocean has a significant impact on Australia's climate and environment. For example, the East Australian Current (EAC) is a prominent warm current originating from the Indian Ocean that flows southward along the eastern coastline, supporting the Great Barrier Reef and other diverse ecosystems. The Great Australian Bight, a large open bay extending from Western Australia to South Australia, is also technically part of the Indian Ocean and is known for its deep waters, powerful swells, and unique marine life, including the endangered Southern Right Whale.
Additionally, the Indian Ocean is connected to the garbage patch problem, with a vortex of plastic garbage constantly circulating the ocean from Australia to Africa and back to Australia in a period of six years. Australia has an interest in ensuring that the Indian Ocean region operates according to international rules, norms, and standards, and the country is committed to playing its part in responding to shared challenges, including climate change and maritime security.
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The Indian Ocean is to the west of Australia
The Indian Ocean is bounded by Iran, Pakistan, India, and Bangladesh to the north; the Malay Peninsula, the Sunda Islands of Indonesia, and Australia to the east; the Southern Ocean to the south; and Africa and the Arabian Peninsula to the west. The Indian Ocean joins the Pacific Ocean to the east, near Australia at South East Cape, Tasmania. Meridionally, the Indian Ocean is delimited from the Atlantic Ocean by the 20° east meridian, running south from Cape Agulhas, South Africa, and from the Pacific Ocean by the meridian of 146°49'E or 147°E, running south from South East Cape on the island of Tasmania, Australia.
The Indian Ocean is an essential trade route, connecting Africa, the Middle East, South Asia, and Southeast Asia. It is also a significant region for Australia's security and prosperity, with the country having one of the Indian Ocean's longest coastlines, the largest Search and Rescue Zone, and the largest Exclusive Economic Zone.
The Great Australian Bight, a large open bay extending from Cape Pasley in Western Australia to Cape Catastrophe in South Australia, is a significant feature of Australia's western coastline. While technically part of the Indian Ocean, the Great Australian Bight has its own characteristics, including deep waters, towering coastal cliffs, and a unique array of marine life, including the endangered Southern Right Whale.
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The Southern Ocean is to the south of Australia
Australia is bordered by the Indian Ocean to the west and the Pacific Ocean to the east. The Southern Ocean, also known as the Antarctic Ocean, is to the south of Australia.
The Southern Ocean is a proposed ocean surrounding Antarctica, dominated by the Antarctic Circumpolar Current. It is the second smallest of the five named oceans and is generally defined as the ocean south of 60 degrees south latitude. The Southern Ocean is partially covered in sea ice, the extent of which varies according to the season.
The Southern Ocean is known for its harsh environment, with cold temperatures and strong currents. It supports a diverse range of marine life, including penguins, seals, and various species of fish and krill. Cold waters from the Southern Ocean can intrude into the waters along the southern coast of Australia, impacting local marine ecosystems.
The Southern Ocean is separated from the Indian Ocean by the 60-degree south latitude line, which was delineated by the International Hydrographic Organization (IHO) in 2002. This new definition has not yet been ratified, and a reservation was lodged by Australia in 2003.
The Indian Ocean is the smallest, youngest, and most physically complex of the world's three major oceans (Pacific, Atlantic, and Indian). It stretches for more than 6,200 miles (10,000 km) between the southern tips of Africa and Australia. The Indian Ocean is bounded by Iran, Pakistan, India, and Bangladesh to the north; the Malay Peninsula, the Sunda Islands, and Australia to the east; and Africa and the Arabian Peninsula to the west.
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The Pacific Ocean is to the east of Australia
Australia is surrounded by three oceans: the Indian Ocean, the Pacific Ocean, and the Southern Ocean. The Indian Ocean is to the west of Australia, the Southern Ocean is to the south, and the Pacific Ocean is to the east.
The Pacific Ocean is the largest and deepest ocean in the world. It spans the gap between Australia and Asia and the Americas. Off the coast of Queensland, Australia, in the Pacific Ocean, lies the Great Barrier Reef, one of the world's most famous natural wonders. This extensive reef system supports an unparalleled diversity of marine life, including the endangered Southern Right Whale, and acts as an important part of the coastal ecosystem by protecting it from stronger wave action. The Pacific Ocean has a significant influence on Australia's climate, biodiversity, and coastal environments. For example, the Pacific is a major driver of tropical cyclones that can impact northern and eastern Australia. The East Australian Current (EAC) is a prominent warm current that flows southward along the country's eastern coastline, supporting the Great Barrier Reef and other diverse ecosystems.
The Indian Ocean is the smallest, youngest, and physically most complex of the world's three major oceans. It stretches for more than 6,200 miles (10,000 km) between the southern tips of Africa and Australia. The Indian Ocean is bounded by Iran, Pakistan, India, and Bangladesh to the north; the Malay Peninsula, the Sunda Islands of Indonesia, and Australia to the east; the Southern Ocean to the south; and Africa and the Arabian Peninsula to the west. The Great Australian Bight, a large open bay extending from Cape Pasley in Western Australia to Cape Catastrophe in South Australia, is technically part of the Indian Ocean. It is known for its deep waters, powerful swells, towering coastal cliffs, and unique marine life.
The Southern Ocean surrounds Antarctica and is distinguished by its cold temperatures and strong currents. While it does not impact the coastlines of mainland Australia as much as the Indian or Pacific Oceans, it influences weather patterns and the overall climate. Cold waters from the Southern Ocean can intrude into the waters along the southern coast of Australia, affecting local marine ecosystems.
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The Indian Ocean is important for Australia's trade
Australia is bounded by the Indian Ocean to the west and the southwest, with Perth recognised as its Indian Ocean capital. The Indian Ocean is the third-largest of the world's five oceanic divisions, covering approximately 20% of the world's water area. As such, it is an important trade route for Australia.
The Indian Ocean is a trading hub and economic highway spanning Africa, the Middle East, South Asia, and Southeast Asia. It is fundamental to maintaining open trade and energy security. The sea lanes in the Indian Ocean are considered among the most strategically important in the world, with more than 80% of the world's seaborne trade in oil passing through its waters and vital chokepoints. The ocean provides major sea routes connecting the Middle East, Africa, and East Asia with Europe and the Americas. It carries a particularly heavy traffic of petroleum and petroleum products from the oil fields of the Persian Gulf and Indonesia.
The Indian Ocean is also important for Australia's trade as it provides access to the large-scale Tropical Warm Pool, which affects the climate both regionally and globally. The Indian Ocean Walker circulation results in unique oceanic currents and upwelling patterns, which impact the climate and the movement of goods and services.
The Indian Ocean region is strategically significant for Australia, and the country has an interest in the region operating according to international rules, norms, and standards. Australia has strengthened its engagement in the region, establishing a High Commission in the Maldives and a Consulate-General in Bengaluru. Australia is committed to promoting a stable and prosperous Indian Ocean region and to playing its part in responding to shared challenges, including climate change and maritime security.
The Indian Ocean has a significant impact on the global climate due to its interaction with the atmosphere. It is the warmest ocean, and its waters are affected by the Indian Ocean Walker circulation, causing unique oceanic currents and upwelling patterns. This interaction with the atmosphere has also facilitated human migration and cultural exchange over thousands of years, with food globalisation beginning on the Indian Ocean littoral around 4,000 years ago.
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Frequently asked questions
The Indian Ocean is to the west of Australia.
The Indian Ocean is a body of saltwater that covers about one-fifth of the world's ocean area. It is the smallest, youngest, and most physically complex of the three major oceans.
The Australian Indian Ocean Territories include Christmas Island and the Cocos (Keeling) Islands.
The Indian Ocean region is essential to Australia's security and prosperity. Australia has one of the Indian Ocean's longest coastlines, the largest Search and Rescue Zone, and the largest Exclusive Economic Zone.
Australia is an Indian Ocean country, with Perth being its Indian Ocean capital. The Indian Ocean stretches for more than 6,200 miles (10,000 km) between the southern tips of Africa and Australia.
