Lake Ohrid is 358 m deep at its lowest point, 30 km long, and far quieter than its surface suggests — the inflow is mostly from underground karst springs along the southern shore, not from rivers. The water is clear to depths of 20 m and the lake holds the largest population of any of its endemic species, including pelicans and the Ohrid trout.
Beyond the boat to Sveti Naum, the lake can be explored by hired kayak from the harbour, by bicycle along the eastern lakeshore road, or simply from one of the lakefront cafes. Swimming is excellent in July and August, when the water reaches 24°C. Take a polarising lens if you photograph — the surface glare is intense.