7.Northern Red Sea

The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez (leading to the Suez Canal). The Red Sea is a Global 200 ecoregion. The water is not red, as the name may imply.

Occupying a part of the Great Rift Valley, the Red Sea has a surface area of roughly 438,000 km² (169,100 square miles ). It is about 2250 km (1398 miles) long and, at its widest point, is 355 km (220.6 miles) wide. It has a maximum depth of 2211 metres (7254 feet) in the central median trench, and an average depth of 490 metres (1,608 feet). However, there are also extensive shallow shelves, noted for their marine life and corals. The sea is the habitat of over 1,000 invertebrate species, and 200 soft and hard corals. It is the world's northernmost tropical sea.

6.Lake Baikal

Lake Baikal is the world's second most voluminous lake, after the Caspian Sea. It is the most voluminous freshwater lake in the world with an average depth of 744.4 m (2,442 ft) and contains a total of roughly 20 percent of the world's surface fresh water.Its Located in the south of the Russian region of Siberia (between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, near the city of Irkutsk), the body of water is also known as the "Pearl of Siberia".

At 1,642 metres (5,390 ft) (Baikal central part 53°14′59″N 108°05′11″E / 53.24972°N 108.08639°E / 53.24972; 108.08639), Lake Baikal is the deepest, and among the clearest of all lakes in the world. At more than 25 million years old, Baikal is also the world's oldest lake.It looks Like Lake Tanganyika, Lake Baikal was formed as an ancient rift valley, having the typical long crescent shape with a surface area of 31,722 km2/12,248 sq mi, less than that of Lake Superior or Lake Victoria. Baikal is home to more than 1,700 species of plants and animals, two thirds of which can be found nowhere else in the world and was declared a UNESCO World Heritage Site in 1996. It is also home to Buryat tribes who reside on the eastern side of Lake Baikal, rearing goat, camel, cattle and sheep, where the regional temperature varies from a minimum of -19°C in winter to maximum of 14°C in summer.

5.Galapagos Islands

The Galapagos Islands are an archipelago of volcanic islands distributed around the equator in the Pacific Ocean, 972 km west of continental Ecuador. It is a UNESCO World Heritage site: wildlife is its most notable feature.

The Galapagos islands and its surrounding waters are part of a province, a national park, and a biological marine reserve. The principal language on the islands is Spanish. The islands have a population of around 23,000.

The islands are geologically young and famed for their vast number of endemic species, which were studied by Charles Darwin during the voyage of the Beagle. His observations and collections contributed to the inception of Darwin's theory of evolution by natural selection.

The first crude navigation chart of the islands was done by the buccaneer Ambrose Cowley in 1684. He named the individual islands after some of his fellow pirates or after the English noblemen who helped the privateer's cause. More recently, the Ecuadorian government gave most of the islands Spanish names. While the Spanish names are official, many users (especially ecological researchers) continue to use the older English names, particularly as those were the names used when Charles Darwin visited.

4.Hydrothermal vent

A hydrothermal vent is a fissure in a planet's surface from which geothermally heated water issues. Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart, ocean basins, and hotspots.

Hydrothermal vents are locally very common because the earth is both geologically active and has large amounts of water on its surface and within its crust. Common land types include hot springs, fumaroles and geysers. The most famous hydrothermal vent system on land is probably within Yellowstone National Park in the United States. Under the sea, hydrothermal vents may form features called black smokers.

Relative to the majority of the deep sea, the areas around submarine hydrothermal vents are biologically more productive, often hosting complex communities fueled by the chemicals dissolved in the vent fluids. Chemosynthetic archaea form the base of the food chain, supporting diverse organisms, including giant tube worms, clams, limpets and shrimp.

Active hydrothermal vents are believed to exist on Jupiter's moon Europa, and ancient hydrothermal vents have been speculated to exist on Mars.

3.Great Barrier Reef

The Great Barrier Reef is the world's largest coral reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,600 kilometres (1,600 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.

The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. The Great Barrier Reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981. CNN has labelled it one of the 7 natural wonders of the world. The Queensland National Trust has named it a state icon of Queensland.

A large part of the reef is protected by the Great Barrier Reef Marine Park, which helps to limit the impact of human use, such as overfishing and tourism. Other environmental pressures to the reef and its ecosystem include water quality from runoff, climate change accompanied by mass coral bleaching, and cyclic outbreaks of the crown-of-thorns starfish.

The Great Barrier Reef has long been known to and utilised by the Aboriginal Australian and Torres Strait Islander peoples, and is an important part of local groups' cultures and spirituality. The reef is a very popular destination for tourists, especially in the Whitsundays and Cairns regions. Tourism is also an important economic activity for the region. Fishing also occurs in the region, generating AU$ 1 billion per year.

2.Belize Barrier Reef

The Belize Barrier Reef is a series of coral reefs straddling the coast of Belize, roughly 300 meters (1,000 ft) offshore in the north and 40 kilometers (25 mi) in the south within the country limits. The Belize Barrier Reef is a 300 kilometers (186 mi) long section of the 900 kilometers (560 mi) long Mesoamerican Barrier Reef System, which is continuous from Cancun on the northeast tip of the Yucatan Peninsula through the Riviera Maya up to Honduras, making it the second largest coral reef system in the world after the Great Barrier Reef in Australia, popular for scuba diving and snorkeling. It is Belize's top tourist destination, attracting almost half of its 260,000 visitors, and vital to its fishing industry.















Species

The Belize Barrier Reef is home to a large diversity of plants and animals, one of the most diverse ecosystems of the world:

* 70 hard coral species
* 36 soft coral species
* 500 species of fish
* hundreds of invertebrate species

With 90% of the reef still needing to be researched, it is estimated that only 10% of all species have been discovered.

1. Palau

Palau is an island nation in the Pacific Ocean, some 500 miles (800 km) east of the Philippines and 2,000 miles (3,200 km) south of Tokyo. Having emerged from United Nations trusteeship (administered by the United States) in 1994, it is one of the world's youngest and smallest sovereign states. In English, the name is sometimes spelled Belau in accordance with the native pronunciation. It was formerly also spelled Pelew.

History of Palau
Archaeology

Early Palauans may have come from Polynesia and Asia. Depending on the origin of a family, Palauans may represent many parts of Melanesia, Micronesia and Polynesia. However, they are not traditionally considered to be Micronesian.

The archipelago is also known as "The Black Islands". Vintage maps and village drawings can be found at the Australian library online, as well as photos of the tattooed and pierced Ibedul of
Koror and Ludee.












States
The sixteen states of Palau.
Main article: States of Palau

Palau is divided into sixteen states (until 1984 called municipalities).

State:
Aimeliik
Airai
Angaur
Hatohobei
Kayangel
Koror
Melekeok
Ngaraard
Ngarchelong
Ngardmau
Ngaremlengui
Ngatpang
Ngchesar
Ngiwal
Peleliu
Sonsorol

Historically, Palau's uninhabited Rock Islands have been part of the State of Koror.