Avalon Beach. Avalon is east of Clareville, situated between Whale beach to the north and Bilgola to the south. Avalon is home to the few remaining koalas able to survive in an increasingly urban environment, a reminder that there once were many more in Pittwater. Avalon Beach is superb for swimming, surfing windsurfing and fishing. A rock swimming pool is located at the southern end of the beach. A shady park area provides refuge from the summer sun, together with picnic and barbeque facilities.