To the west and south Puhtu is surrounded by that part of the Gulf of Riga where the strait between the larger and smaller islands, known as Suur Väin, begins. Rame Bay lies towards the east with one of its smaller bays, Vanaluubi Bay, pushing its way west on the islets northern coast. It was Vanaluubi Bay which once separated Puhtu from the Virtsu Peninsula, and Änniku, also known as Annikese Bay situated to the west is even now connected to Vanaluubi Bay by a river-like lagoon. As long ago as the 19th century a high causeway with a bridge was built across this lagoon. In 1952 the bridge was replaced by a stone causeway and this is what now makes Puhtu a part of the Virtsu Peninsula. Occasionally, however, when the sea level is high and especially during westerly storms when the road between Puhtu and Virtsu is under water then Puhtu is an islet once again as it was centuries ago.
