Thermaic Gulf, Bay inlet in northern Greece.
The Thermaic Gulf is a large bay in northern Greece bounded by the Pieria coast on the west and the Chalkidiki peninsula on the east. Three major rivers deliver sediment to the water and have built up shallow zones along the shoreline over time.
Ancient Romans named these waters after the town of Therma, which later grew into the city of Thessaloniki. The name reflects the bay's long connection to the region's maritime heritage.
The Port of Thessaloniki shapes the character of these waters as the region's main commercial hub. Fishing boats and cargo vessels fill the bays and coastal towns throughout the year.
Coastal towns around the bay are easy to reach and offer different ways to access the water from shore. The shallow areas are good for swimming while other zones work better for boats.
A ship canal built in 1937 connects the gulf directly to Kolpos Kassandras and creates an artificial waterway. This connection opened new shipping routes for vessels moving through the area.
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