Underwater wonders

Wonders of the world - project eTwinning 

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TEAM: Barbara Kowalczyk - Poland

The Great Barrier Reef, a wonder of the world

Great Barrier Reef | Exploring Oceans

Palau, Belize coral reef, Great Barrier Reef, Deep vents, Galapagos Islands, Bajkal lake, North Red Sea

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Baikal is on the UNESCO World Heritage List In 1996, Baikal and the adjacent areas were included in the UNESCO World Heritage List. There are three reserves and two national parks in the vicinity of the lake. Lake Baikal has almost 30 islands There are 27 islands in the reservoir area, most of which are uninhabited. The largest and most popular island is Olkhon, which is 72 km long and is inhabited by about 1.5 thousand people. people. A railway route runs along the shore of the lake You can get to know a fragment of the Baikal coast thanks to the historical part of the Trans-Siberian main road, i.e. the Krugobajklaska Railway, which is 90 km long. It is worth noting that Baikal itself is 636 km long and 79 km wide.

Lake Baikal feeds over 300 rivers Interestingly, as many as 336 rivers flow into Baikal - including the Selenga or Barguzin, and only one flows out of it - the Angara, which is 1 kilometer wide at the mouth of the lake. The waters of Baikal are clean and transparent The water in the lake is characterized by a low concentration of dissolved substances and suspensions, which results in a high transparency of up to 40 m. The ice is also so transparent that even several dozen meters from the shore you can see the bottom. Baikal is home to many species of plants and animals The lake boasts a great wealth of fauna and flora. More than 2,000 people live in its waters. species, of which about 60 percent. are endemic species, i.e. found only in Lake Baikal - e.g. Baikal seal, Baikal omul, Gołomianka and Baikal teal.

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The Great Barrier Reef, a wonder of the world

It is the largest coral reef system in the world, consisting of over 2,900 individual reefs&nbsp;.&nbsp;900 islands of various sizes occupy an area of&nbsp;over 2600 kilometers.&nbsp;The reef is located in the Coral Sea off the coast of Queensland, Australia.&nbsp;Apparently, the Great Barrier Reef was first discovered in 1768 by Louis de Bouganville who identified the unique structures on a mining mission.

The Great Barrier Reef is&nbsp;the largest structure in the world built only by living organisms&nbsp;and can be seen in all its splendor from space.&nbsp;Millions of small organisms composed this&nbsp;wonder of nature&nbsp;that has been part of the UNESCO World Heritage since 1981. Coral reefs, Great Barrier Reef, Australia 10 million years ago the sea water level dropped significantly and this fact produced sedimentation and created a favorable environment for the development of microorganisms.&nbsp;These marine organisms multiplied and over time formed these coral reefs.&nbsp;They can grow in diameter from 1 to 3 centimeters and can be at a&nbsp;maximum depth of 150 meters due to the permanent need for light&nbsp;.

Therefore, the Great Barrier Reef is a unique phenomenon in the world, of such magnitude, which attracts millions of tourists year after year eager to see a&nbsp;natural masterpiece&nbsp;.

Lake Baikal is a tectonic lake in the Asian Part of Russia. It is not only the deepest lake in the world, but also the oldest - it is estimated to be over 25 million years old. 

Baikal is the deepest lake in the world Lake Baikal at its deepest point reaches as much as 1642 m down, and on average it is 730 m deep. The bottom of the reservoir is at a depth of 1186.5 m below sea level, so Baikal is the world's largest crypto depression. In winter, Baikal freezes over completely When the temperature drops, the waters of the lake turn into ice, which is strong enough (it can be up to 2 m thick) to allow cars to move on the surface. There are even special roads that allow residents to get from one shore to the other.

Tapeciarnia.pl-tapeta-jezioro-bajkal-z-widokiem-na-skale-zwana-s - jigsaw puzzle (24 pieces)

Exploring the Coral Reef: Learn about Oceans for Kids - FreeSchool

Austraila's Great Barrier Reef

Lake Baikal: Summer trip 2021 // Short film // 4К

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