Sardinia

Sardinia is the second-largest island in the Mediterranean after Sicily, fronting the Tyrrhenian Sea on its eastern coast, the Sardinian Sea on its western, and the Bonifacio Strait separating it from Corsica to the north. Cagliari sits on the southern shore at the head of the Golfo di Cagliari, with the working port and the long Poetto beach corridor running east toward the Devil's Saddle headland. The tide here is the small Tyrrhenian Mediterranean signal that the rest of mainland Italy shares: mean range at the Cagliari harbour gauge is about 0.2 metres, with spring tides reaching close to 0.3 and neaps dropping near flat. The astronomical signal is genuinely tiny because the Mediterranean connects to the Atlantic only through the narrow Strait of Gibraltar. What matters more on a day-to-day basis is meteorological tide. The mistral funnels down from the Gulf of Lion across the Sardinian Sea in cold-front events, dropping water level on the western coast and raising it on the eastern; the scirocco southerly that builds ahead of approaching depressions does the opposite and can raise water at Cagliari by 20 to 40 centimetres on sustained events. The defining ecological feature of the southern coast is the Stagno di Cagliari salt-marsh and lagoon system. The Molentargius-Saline regional park immediately east of the city wraps a chain of brackish lagoons, salt pans (saline), and reedbeds that hosts one of the largest greater flamingo breeding colonies in the western Mediterranean — about 10,000 to 20,000 pairs nest each spring, and the pink flocks visible from the Poetto beach promenade are a Cagliari signature. The salt-pan industry that gave the lagoons their working name was active from Roman times until the 1985 closure. Sailing fleets out of the Marina Portus Karalis and the Cagliari Yacht Club, the cruise terminal at Molo Sant'Agostino, the surf at Chia and Capo Spartivento on the south-western coast, and the rocky shore at Cala Mosca and Calamosca all read the wider weather pattern more than the tide table. ISPRA Mareografico Nazionale runs the authoritative Italian gauge network.