Marmara Island in the context of "Marble"

Tenedos (Greek: Τένεδος; pronounced [ˈteneðos]; Latin: Tenedus), or Bozcaada in Turkish, is an island of Turkey in the northeastern part of the Aegean Sea. Administratively, the island constitutes the Bozcaada district of Çanakkale Province. With an area of 39.9 km (15 sq mi), it is the third-largest Turkish island after Imbros (Gökçeada) and Marmara. In 2022, the district had a population of 3,120 inhabitants. The main industries are tourism, wine production and fishing. The island has been famous for its grapes, wines and red poppies for centuries. It is a former bishopric and presently a Latin Catholic titular see.

Tenedos is mentioned in both the Iliad and the Aeneid, in the latter as the site where the Greeks hid their fleet near the end of the Trojan War in order to trick the Trojans into believing the war was over and into taking the Trojan Horse within their city walls. Despite its small size, the island was important throughout classical antiquity due to its strategic location at the entrance of the Dardanelles. In the following centuries, the island came under the control of a succession of regional powers, including the Persian Empire, the Delian League, the empire of Alexander the Great, the Attalid kingdom, the Roman Empire and its successor, the Byzantine Empire, before passing to the Republic of Venice. As a result of the War of Chioggia (1381) between Genoa and Venice the entire population was evacuated and the town was demolished. The Ottoman Empire established control over the deserted island in 1455. During Ottoman rule, it was resettled by both Greeks and Turks. In 1807, the island was temporarily occupied by the Russians. During this invasion the town was burnt down and many Turkish residents left the island.

Marmara is a municipality and district of Balıkesir Province, Turkey. Its area is 134 km, and its population is 10,601 (2022). It comprises Marmara, Avşa and Ekinlik islands along with the neighbouring smaller islands. The mayor is Süleyman Aksoy (AKP). The seat of the municipality is in the neighbourhood Cumhuriyet on Marmara Island. The seat of the district governor (kaymakam) is in the neighbourhood Yenimahalle, also on Marmara Island.

Erdek is a municipality and district of Balıkesir Province, Turkey. Its area is 307 km, and its population is 32,021 (2024). Located on the Kapıdağ Peninsula, on the north coast of the Gulf of Erdek at the south of the Sea of Marmara, Erdek is a popular domestic holiday destination with several hotels dating back to the 1960s. The surrounding area has a rugged geology and topography with evergreen wooded areas and large olive groves. It is dominated by Mt Dindymus (782m). Erdek district also included the islands of Koyun and Paşalimanı.

In the summer ferries travel from Erdek to Avşa Adası, one of the Marmara Islands in the Sea of Marmara. The harbour overlooks tiny Zeytinlik island where there is a research station devoted to olives.

Ekinlik Island, formerly Koutalis (Greek: Κούταλης) is an island situated off the Turkish coast, in the Sea of Marmara. Administratively, the island belongs to Marmara, the central settlement of Marmara Island in Balikesir, Turkey. The island has an area of approximately 2.47 square kilometres, one village with the same name, and a population of 102, according to the 2014 census.

Erdek Gulf is a gulf of Marmara Sea, Turkey. It is administratively a part of Balıkesir Province.In fact, the gulf is named after Erdek, an ilçe (district) of the Balıkesir Province which is situated at the north coast of the gulf .The midpoint of the gulf is at about 40°22′N 27°40′E / 40.367°N 27.667°E / 40.367; 27.667. Kapıdağ Peninsula, Paşalimanı Island and Avşa Island are to the north, Belkıs Tombolo (connecting Kapıdağ Peninsula to the Anatolia mainland) is to the east, Karabiga ilçe is to the west and the Marmara coast of Anatolia is to the south. The maximum depth of the gulf is 47 metres (154 ft).

There are ferry services in the gulf. One service is to Barbaros in the Thracen side of Turkey, close to Tekirdağ. There are also ferry services to the nearby islands such as Marmara Island (Saraylar terminal), Avşa Island and the Paşalimanı Island.

Paşalimanı Island (Turkish: Paşalimanı Adası), formerly Halone (Greek: Ἁλώνη), is an island in the southern Sea of Marmara in Turkey. The island is the fifth largest island of Turkey (26.2 km (10.1 sq mi)) and administratively belongs to the Erdek town of Balikesir Province in northwestern Turkey. The island has five small villages and has 962 population in total. Paşalimanı Island is also part of the Marmara Archipelago along with three other islands Marmara, Avşa and Ekinlik.