Shark Bay facts for kids

For other uses, see Shark Bay (disambiguation).

Quick facts for kids
Shark Bay, Western Australia
UNESCO World Heritage Site
Shark Bay
Location	Gascoyne region, Western Australia, Australia
Criteria	Natural: vii, viii, ix, x
Inscription	1991 (15th Session)
Area	2,200,902 ha (5,438,550 acres)

Louis Henri de Saulces de Freycinet's Useless Harbour in Shark Bay, seen from the SPOT satellite

Map of Shark Bay area

Zuytdorp Cliffs

Shark Bay, known as Gathaagudu by the local Indigenous people, is an amazing World Heritage Site in Western Australia. It's located about 800 kilometers north of Perth, right on the westernmost tip of the Australian continent. This huge area, covering about 23,000 square kilometers, is famous for its incredible natural beauty and unique wildlife. UNESCO recognized Shark Bay as a special place in 1991 because of its vast seagrass beds, ancient stromatolites, and many rare marine animals like dugongs and dolphins. It's a truly special place where you can see some of the oldest forms of life on Earth and a thriving marine ecosystem. The bay is also a popular spot for fishing.

Discovering Shark Bay: A World Heritage Wonder
See also

Discovering Shark Bay: A World Heritage Wonder

Exploring Shark Bay's Rich History

People have lived in the Shark Bay area for at least 22,000 years. Back then, much of the area was dry land. As sea levels rose between 8,000 and 6,000 years ago, the bay filled with water. Many ancient sites, especially on Peron Peninsula and Dirk Hartog Island, show what foods the Aboriginal people gathered from the land and sea.

European explorers first arrived in 1616 when Dirk Hartog landed here. This made his group the second known Europeans to visit Australia. Later, in 1699, the English explorer William Dampier gave the area its name, "Shark Bay." Other explorers like Louis Aleno de St Aloüarn, Nicolas Baudin, and Louis de Freycinet also visited. European settlers, mostly farmers, began living in Shark Bay in the 1860s and 1870s. Industries like pearling also grew quickly from 1870. In the past, some other industries operated here, including activities related to whales for a period in the early 20th century. Today, fewer than 1,000 people live in the small communities within this vast heritage area.

Shark Bay's Unique Climate and Weather

The Shark Bay Heritage Area has a hot desert climate. This means it has very hot and dry summers. The winters are much milder and a bit wetter. It's a place of extremes, with some very high temperatures recorded!

Protecting Shark Bay: A World Heritage Site

Shark Bay was named a World Heritage Site in 1991. It was the first place in Western Australia to receive this special recognition. The site covers about 23,000 square kilometers, and most of that (about 70 percent) is ocean water. The site was also added to the Australian National Heritage List on 21 May 2007.

Special Protected Areas in Shark Bay

This important area includes many protected zones and nature reserves. These include Shark Bay Marine Park, Francois Peron National Park, Hamelin Pool Marine Nature Reserve, and Zuytdorp Nature Reserve. Many islands are also protected. While towns like Denham and Useless Loop are within the general area, they are not part of the protected World Heritage Site itself.

Amazing Landforms of Shark Bay

The bay itself is huge, covering about 1.3 million hectares, and is usually about 9 meters deep. It has many shallow areas, peninsulas, and islands. The coastline stretches for over 1,500 kilometers! You can also see about 300 kilometers of amazing limestone cliffs, like the famous Zuytdorp Cliffs. Shark Bay is a special place where three different climatic regions and two major botanical provinces meet.

The Peron Peninsula divides the bay and is home to the largest towns and a National Park at its northern end.

Dirk Hartog Island: A Place of Early Discoveries

Dirk Hartog Island is very important historically. In 1616, Dirk Hartog landed at Inscription Point. He left a pewter plate with the date of his discovery, nailed to a post. Later, another explorer, Willem de Vlamingh, replaced this plate and took the original back to the Netherlands. You can see a replica of this plate at the Shark Bay Discovery Centre in Denham.

Islands for Wildlife Protection

Bernier and Dorre islands, located in the northwest, are vital homes for two types of Australian mammals called hare-wallabies. These animals are threatened with extinction. These islands, along with many smaller ones in the marine park, are used to release threatened species. These animals are bred at Project Eden in François Peron National Park. The islands are safe havens because they don't have non-native animals that might harm the threatened species.

In 1999, the Australian Wildlife Conservancy took over the management of Faure Island. Sea turtles nest there every year, and scientists study them to help protect them.

Incredible Animals of Shark Bay

Shark Bay is an incredibly important place for animals. It's home to about 10,000 dugongs, also known as 'sea cows,' which is about 12.5% of all dugongs in the world! You can also find many Indo-Pacific bottlenose dolphins, particularly at Monkey Mia, where they have been friendly with humans since the 1960s.

The area supports 26 different Australian mammal species that are threatened. Over 230 types of birds and nearly 150 kinds of reptiles also live here. It's a crucial place for fish, crustaceans, and coelenterates to breed and grow. There are more than 323 fish species, including many sharks and rays.

Some bottlenose dolphins in Shark Bay are very clever! They use a sponge to protect their nose while searching for food on the sandy seafloor. This is one of the few known examples of marine mammals using tools. Humpback whales and southern right whales use the bay as a resting stop during their long migrations. Other whales, like Bryde's whales, visit less often to feed or rest. Endangered green and loggerhead sea turtles lay their eggs on the bay's sandy beaches. Even the biggest fish in the world, the whale shark, gathers in the bay during April and May.

The Wonderful Plants of Shark Bay

Shark Bay has the largest known area of seagrass, with seagrass meadows covering over 4,000 square kilometers! This includes the Wooramel Seagrass Bank, which is the biggest seagrass bank on Earth. There's even a single plant of Posidonia australis that has grown into a meadow covering 200 square kilometers, making it the largest plant in the world!

You can find more types of seagrass here than anywhere else; twelve species have been recorded, with up to nine growing together in some spots. These seagrasses are super important for the bay's environment. Over thousands of years, they've collected sediment and shell pieces, making the seafloor higher and the bay shallower. Seagrasses are the base of the food chain, providing homes and food for many marine animals, which is why so many dugongs live here.

Because of Shark Bay's hot, dry climate, a lot of water evaporates. This makes the shallow bay water very salty, or hypersaline. The seagrasses also slow down the tidal flow of waters through the bay area, which stops the saltier bay water from mixing with the less salty ocean water. This means the water in the bay can be 1.5 to 2 times saltier than the open ocean!

Stromatolites in Hamelin Pool are ancient structures that are built by microbes.

Ancient Life: Shark Bay's Stromatolites

About 1,000 years ago, tiny living things called cyanobacteria (blue-green algae) started building up amazing structures called stromatolites in Hamelin Pool. These microbialites, a type of sedimentary structure, are like living fossils! They are modern examples of some of the earliest life forms on Earth. Scientists have found fossilized stromatolites that are 3.5 billion years old!

The living stromatolites in Shark Bay were first discovered in 1956. Before that, people only knew about them from fossils. Hamelin Pool has the most diverse and abundant living stromatolites in the world. They are a truly unique window into Earth's ancient past. It's even thought that some stromatolites might contain a new type of chlorophyll, called chlorophyll f.

Learn More: Shark Bay Discovery Centre

If you visit Shark Bay, you can learn all about it at the Shark Bay World Heritage Discovery Centre in Denham. It has fun, interactive displays and lots of information about the region's special features.

How to Visit Shark Bay

Access to Shark Bay is by air via Shark Bay Airport, or by driving along the World Heritage Drive. This road is about 150 kilometers long and connects Denham to the Overlander Roadhouse on the North West Coastal Highway.

More Places to Explore in Shark Bay

Shark Bay is full of amazing places to see!

National Parks and Reserves

Dolphin at Monkey Mia

Bernier Island
Dorre Island
Charlie Island
Francois Peron National Park
Friday Island
Hamelin Pool Marine Nature Reserve
Hamelin Pool/East Faure Island High-Low Water Mark
Koks Island
Monkey Mia
Shark Bay Marine Park

Shell Beach

Shell Beach
Small Islands
Zuytdorp Nature Reserve

Beautiful Bays to See

Hamelin Pool
Henri Freycinet Harbour
L'Haridon Bight

Important Islands of Shark Bay

Fascinating Peninsulas

Bellefin Prong
Heirisson Prong
Carrarang Peninsula
Peron Peninsula