A few hundred metres west of Île d’If are the Îles du Frioul, the barren, dyke-linked, white-limestone islands of Ratonneau and Pomègues. Sea birds and rare plants thrive on these tiny islands, which are each about 2.5km long, totalling 200 hectares. Ratonneau has three beaches. Frioul If Express boats to Château d'If also serve the Îles du Frioul (one/two islands €10.50/15.60 return, 35 minutes, around 20 daily).
