Maritime Türkiye

Coastlines & Seas

Türkiye is a maritime treasure — bordered by sea on three sides and home to a unique internal waterway. Its coastline stretches for 8,483 km (5,271 miles), spanning four distinct marine basins, each with its own character, geography and coastline personality.

Whether you are looking for hidden rocky coves, vast sandy deltas, or world-class beach resorts, Türkiye offers an incredible variety of seaside landscapes. According to the most recent nationwide spatial analysis (Öztürk et al., 2025 — TÜBİTAK), the country is home to 6,110 individual beaches covering a combined length of 2,890 km (1,796 miles) — roughly 34% of the total coastline.

How the Coastline is Shaped

Türkiye's coastlines are divided into three main geomorphological types. The majority are rugged and erosional — dramatic cliffs and rocky shores shaped over millions of years by tectonic forces.

Rocky/Cliff · 69%
Sandy · 19%
Deltaic · 12%

The Four Marine Basins

Türkiye's shores are divided into four distinct regions, each with its own personality, geography and sea conditions.

Aegean Sea
The Longest Coast
3,268 km
2,030 miles
38.5% of total

Because the mountains meet the sea at a right angle here, the coast fractures into thousands of tiny bays, gulfs and peninsulas. This gives the Aegean the highest beach density of any region — 2,836 individual beaches.

Sea surface temp: 16–20°C (61–68°F)

Mediterranean Sea
The Turquoise Coast
2,025 km
1,258 miles
23.9% of total

Famous for its warm, clear water and long stretches of golden sand. The Mediterranean has the highest proportion of tourism-related beaches in the country — nearly one in three is linked to the tourism economy.

Sea surface temp: 20–24°C (68–75°F)

Black Sea
The Green Coast
1,719 km
1,068 miles
20.3% of total

Mountain ranges run parallel to the shore here, creating a straighter, smoother coastline backed by dense green forests. The beaches tend to be broader and longer than the Aegean average — Black Sea beaches are about twice as wide.

Sea surface temp: 14–18°C (57–64°F)

Sea of Marmara
The Internal Sea
1,471 km
914 miles
17.3% of total

Located entirely within Türkiye, the Marmara connects the Black Sea to the Aegean through the iconic Bosphorus and Dardanelles straits — one of the most strategically important waterways in the world.

Sea surface temp: 16–20°C (61–68°F)

Coastal Facts at a Glance

Region Share Length (km) Length (miles) Key feature
Aegean Sea 38.5% 3,268 km 2,030 mi Jagged coast with thousands of coves
Mediterranean Sea 23.9% 2,025 km 1,258 mi Warmest water and top tourism resorts
Black Sea 20.3% 1,719 km 1,068 mi Wide beaches and lush coastal forests
Sea of Marmara 17.3% 1,471 km 914 mi Strategic sea connecting two continents
Total 100% 8,483 km 5,271 mi 6,110 individual beaches identified

Türkiye's Beaches: Nature's Variety

Not all beaches are created equal. Scientists have identified seven different formation types across Türkiye's 6,110 beaches. Here are the most significant types you will encounter.

Rocky Coves
61.6% of all beaches · 3,766 total

The most common beach type, found predominantly along the Aegean coast. Small, secluded and often nestled between dramatic cliffs. Average length just 172 m (564 ft) — intimate by nature.

River-Mouth Beaches
19.6% of all beaches · 1,196 total

Formed where rivers meet the sea, depositing sediment in shifting sandbars and broad sandy stretches. Average length 565 m (1,854 ft). Concentrated along the Aegean and Mediterranean.

Delta Beaches
1.5% of beaches · 37% of total beach length

The "giants" of Türkiye's coast — long, wide, sandy stretches at major river deltas. Despite being rare (only 90 exist), they average 7,722 m (4.8 miles) each and dominate total beach length.

Island Attachments (Tombolos)
0.6% of beaches · 35 total

Rare and beautiful — sandbars that connect an island to the mainland, such as the Kapıdağ Peninsula in the Sea of Marmara. Above average in size, averaging 1,648 m (1 mile) in length.

Man-Made Beaches
12% of beaches · 781 total

Beaches shaped by coastal engineering — breakwaters, groynes and harbour walls create calm swimming zones. Especially common along the Black Sea, where the coastal highway has reshaped large sections of shoreline.

Low-Lying Coast Beaches
1.1% of beaches · 68 total

Set on broad valleys and flat plateaus without forming true deltas. Among the longest beach types at an average of 5,488 m (3.4 miles), found mainly along the Mediterranean.

A Global Leader in Clean Beaches

Türkiye is world-renowned for its environmental standards. As of 2025, the country ranks 3rd globally for the number of Blue Flag certified beaches, with 567 designations — an internationally recognised eco-label awarded for water quality, environmental management and safety.

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Antalya

Home to 257 beaches total, Antalya leads Türkiye — and rivals the world — for the highest concentration of Blue Flag certified swimming spots.

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Muğla

With 1,342 individual beaches — the most of any province — Muğla offers endless exploration along the spectacular Aegean and Mediterranean shores.

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Sakarya

Home to some of the longest continuous beaches in the country — three deltaic beaches with an average length of 18 km (11 miles) each.

Coastal Pressures & Conservation

Türkiye's beaches face growing human pressures. Research shows that 908 beaches (15%) are directly tied to tourism activity, while 1,044 beaches (17.1%) show evidence of construction encroachment over the past two to three decades. The regions most affected are the Aegean and Mediterranean coasts, particularly the provinces of Muğla, İzmir, Balıkesir and Çanakkale.

Despite a Coastal Law prohibiting construction within 50 m (164 ft) of the shoreline, development continues to reshape natural beach environments. Climate projections also indicate that sea surface temperatures along Türkiye's coasts will rise by an average of 1.5°C (2.7°F) by 2050, with implications for beach morphology and coastal ecosystems.

Data sourced from: Öztürk M.Z., Yılmaz B. & Soykan A. (2025). A comprehensive analysis of Türkiye's beaches: spatial distribution, morphometry, and human impacts. Turkish Journal of Earth Sciences, 34(7): 854–874. doi:10.55730/1300-0985.1998 — TÜBİTAK Academic Journals.