Sea of Marmara

The Sea of Marmara is a small sea.

It is inside the land of Turkey. This sea connects two other seas. It sits between the European and Asian sides of Turkey. Many people live near the coast. Large cities are all around the water. The sea has many islands too. One big island is named after marble. The water can be salty. A thick, sticky substance has appeared in the sea before. It is a very important place for many people.

The Sea of Marmara is a small inland sea.

It sits entirely inside the country of Turkey. This sea connects the Black Sea to the Aegean Sea. It also separates the European and Asian sides of Turkey. The sea is named after Marmara Island. That island is famous for its marble.

Many people live near this water. About one-third of the people in Turkey live in this area. Large cities like Istanbul sit on its coast. The sea has two main groups of islands. The Princes' Islands are in the north. The Marmara Islands are in the south.

The sea faces some hard challenges. A fault line runs under the water. This can cause big earthquakes. In 1999, a large earthquake hit the shores.

Pollution has also been a problem. A thick and sticky substance called mucilage appeared in 2021. This substance lasted for six months. It made it hard for fish to live and for people to fish. The sea is a very busy and important place.

The Sea of Marmara is a small and busy inland sea.

It sits entirely within the borders of Turkey. This sea acts like a bridge between two other large bodies of water. It connects the Black Sea to the Aegean Sea. It does this through two narrow paths called straits. These are the Bosporus and the Dardanelles. The sea also separates the European and Asian sides of Turkey. Some people call it the Propontis. This was the name used by the Ancient Greeks.

The water in the sea has a special way it works. The surface water is not very salty. Its salinity is about 22 parts per thousand. This is a little more salty than the Black Sea. However, it is only two-thirds as salty as most oceans. The water at the very bottom is different. It is much more saline there. It averages around 38 parts per thousand. This is similar to the salt levels in the Mediterranean Sea. Rivers like the Biga and Gönen flow into the sea. These rivers help to reduce the saltiness of the water.

History and myths are tied to these waters. In ancient times, Greeks called it the Propontis. This name meant "in front of" the Black Sea. They used it because they sailed through it to reach that sea. Greek myths tell of a big storm on these waters. This storm brought the Argonauts back to an island. This event led to a battle between famous heroes. The sea is also named after Marmara Island. This large island sits on the south side of the sea. It is famous because it is rich in marble.

There are many islands to explore in the sea. In the north, you can find the Princes' Islands. This group includes inhabited places like Büyükada and Heybeliada. People can reach these islands by ferry from Istanbul. In the south, there is another group called the Marmara Islands. This group includes the large Marmara Island and Avşa. Some islands in this group are inhabited, while others are not. Many people visit these islands for holidays in the summer. The sea is also a home for many people. About one-third of Turkey's population lives near this water.

The sea faces some very hard jobs today. A fault line called the North Anatolian Fault runs under the water. This can cause big earthquakes. In 1999, the Izmit and Düzce earthquakes happened. A large earthquake in August 1999 is called the Marmara Earthquake. Pollution is another big problem for the sea. Many cities like Istanbul are right on the coast. Rapid growth and waste have put pressure on the water. In 2021, a thick and sticky substance called mucilage appeared. It lasted for six months and made it hard for fish to live.

The Sea of Marmara is a unique inland sea located entirely within Turkey.

It serves as a vital maritime link between the Black Sea and the Aegean Sea. This connection is made through two narrow waterways known as straits. The Bosporus connects the sea to the Black Sea in the northeast. The Dardanelles connects the sea to the Aegean Sea in the west. Because of its position, the sea also separates the European and Asian sides of Turkey. It is often considered the smallest sea in the world.

The hydrology, or the study of how water moves, of the Sea of Marmara is quite complex. The surface salinity, which is the amount of salt in the water, averages about 22 parts per thousand. This level is slightly higher than the Black Sea. However, it is only about two-thirds as salty as most of the world's oceans. The water becomes much more saline at the bottom of the sea. The bottom water averages around 38 parts per thousand. This concentration is similar to the salt levels found in the Mediterranean Sea. This high-density saline water stays at the bottom and does not migrate to the surface.

Several rivers contribute to the water system of this sea. The Susurluk, Biga (also called the Granicus), and Gönen rivers all flow into the Sea of Marmara. These rivers help to reduce the overall salinity of the water. Most of these rivers flow from Anatolia because there is very little land in Thrace that drains southward. The sea's coastline is also defined by several large indentations. These are known as gulfs. The south coast includes the Gulf of İzmit, the Gulf of Gemlik, the Gulf of Bandırma, and the Gulf of Erdek.

The history of the region is reflected in its ancient names and myths. In classical antiquity, the Greeks called the sea the Propontis. This name comes from the Greek words meaning "in front of" the Black Sea. This was because Greek sailors traveled through these waters to reach the Black Sea. Greek mythology also features the Propontis. Legend says a storm on these waters brought the Argonauts back to an island. This event led to a battle involving the heroes Jason or Heracles. The sea's modern name comes from Marmara Island. This island is located on the south side and is named for its rich marble deposits.

There are two main groups of islands within the Sea of Marmara. The first group is the Princes' Islands in the north. This archipelago includes inhabited islands such as Kınaliada, Burgazada, Heybeliada, Büyükada, and Sedef Adası. These islands are part of the larger urban area and are easy to reach by ferry from Istanbul. The second group is the Marmara Islands in the south. This group includes Marmara Island, Avşa, Paşalimanı, and Ekinlik. It also contains seventeen mostly uninhabited islands. One of these is the island of Imralı. During the summer, many tourists travel to these islands by ferry from Istanbul.

Despite its small size, the Sea of Marmara is incredibly important for the population of Turkey. About one-third of the country's total population lives in the basin surrounding the sea. Major cities like Istanbul are located along its coasts. This high population density brings significant environmental challenges. Rapid population growth and uncontrolled construction have put heavy pressure on the marine environment. For many years, waste was dumped into the sea without much treatment. This caused many species to disappear. In the "East Bay," pollution was so severe that fishing was banned for years.

Natural and human-made disasters also affect the area. The North Anatolian Fault runs directly under the sea. This fault line has caused major earthquakes, including the Izmit and Düzce quakes in 1999. The August 1999 event is often called the Marmara Earthquake because its epicentre was under the sea. In December 1999, a Russian oil tanker broke in two during a storm. This accident spilled more than 1,500 tonnes of oil into the water. Another recent problem was the appearance of mucilage. This is a thick, sticky substance that appeared in early 2021. It lasted for six months and caused habitat loss and economic issues for fishing.