ANNA BAY (ONE MILE)
Nightcliff beach (NT 143) is backed by eroding bluffs that are protected by a rubble seawall, with claystone rock platforms at either end of the 300 m long beach. A road runs along the top of the bluffs with two walkways down to the beach, which is patrolled by Darwin SLSC between June and August. The beach is moderately steep and narrow at high tide, while 200 m wide sand and some rock flats are exposed at low tide. It is separated from its neighbouring beach by a 200 m wide 10 m high headland, with a public swimming pool and park located on the headland.
Anna Bay is a 2 km wide southeast-facing bay bordered by the rocky shores of Fingal Head to the north and Moana Point in the south. In between is a curving 2 km long section of sand containing two exposed beaches (NSW 231 & 232), most of which are located in Tomaree National Park. The northern Samurai beach (NSW 231) curves gently to the southwest for 1.1 km to Samurai Point, a small boundary headland. It is backed by active dunes rising to 30 m and extending 800 m inland (Fig. 4.136). The beach is accessible to 4WD and a popular spot for beach driving. It is also an official nude beach.The southern One Mile Beach (NSW 232), also known to surfers as Anna Bay, is 1.3 km long and curves round to face the east against the southern rocks. It also has dunes reaching 400 m inland at its northern end. At the southern end the dunes narrow and are backed by a caravan park, a shaded parking and picnic area and a kiosk. Wave height is low in the south averaging 0.5 m, but increases up the beach to 1.5 m along the central and northern half of One Mile and along Samurai. A single bar dominates One Mile with a strong permanent rip against the southern rocks, and 3-4 beach rips increasing in size up the beach. The more exposed Samurai has two bars, the inner usually cut by four rips, while the outer has 2-3 large rips, including a permanent rip against the northern headland.
On the south side of Shellharbour a rock platform extends 300 m seaward, and forms the northern boundary of the southern Shellharbour Beach (NSW 383), a curving 1 km south-southeast-facing beach that extends to the base of Bass Point, where the sand merges with the basalt cobbles eroded from the point. A caravan park lies behind the northern rocks, with a beach car park on the southern side. The road to Bass Point runs between the low dune and Shellharbour Swamp, with the usually dammed mouth breaking out across the southern end of the beach during rain. Proposals have been put forward to build a marina in the swamp with access to the sea, but in 2006 the beach remains in a relatively natural state. Waves from the east and southeast are reduced by Bass Point resulting in waves averaging 1 m in the north dropping to 0.5 m in the south. These usually maintain a continuous attached bar, cut by up to six rips during higher southeast swell when a strong rip can develop against the northern rocks, and during summer northeast wave conditions (Fig. 4.312).