The northern shore of North Stradbroke Island faces essentially due north and runs for 13 km from low, sandy Amity Point to 25 m high Point Lookout, the north-east tip of the island. In between are four sandy beaches, the eastern three bordered by rocks and headlands, together with the growing town of Point Lookout, which now backs about 3 km of the north-eastern corner of the island.Flinders beach (1581) is an 8 km long, north-east to north facing beach, bordered by Amity Point and extensive tidal shoals in the west and the 20 m high Rocky Point in the east. Between the two points, the shoreline has built out 1 to 2 km over the past few thousand years as a series of foredune ridges and spits, backed by an extensive swamp that is drained by two small creeks, one in the centre and one just west of Rocky Point. There is vehicle access to the beach toward the western end along the Flinders Beach Road, which also leads to a camping area and car park, and in the east at Adder Rock, where there is also a beachfront caravan park. The beach has a relatively low gradient and is either barless or fronted by a narrow continuous bar, particularly toward the east. Seaward of the bar, sand moves from east to west in the form of elongate sand waves and bars, which result in a highly variable outer surf zone. During high swell a strong westerly drift runs along and off the beach.
The main Yanchep Lagoon beach (WA 895) extends north from the northern bluff for 300 m. The reef is attached at the southern end, with the beach curving to the east causing the lagoon to widen to the north. While waves are usually low in the lagoon, water rushing over the reef flows northward along the lagoon and out of the deep 50 m wide channel as a permanent rip (Fig. 4.223). Beware of this current if swimming in the channel. The beach is backed by vegetated 15 m high bluffs, a large blufftop car park and kiosk.
Oak Beach is a straight, east facing, 1.6 km long beach running almost due south from White Cliffs. The Cook Highway clips the southern end, where there is a car park and access to the beach. The remainder of the beach is backed by farms, with a creek draining across the centre of the beach and the rocks of White Cliffs protruding 100 m off the northern end. The beach is composed of a mixture of sand and cobbles, with steep, gravel cusps at high tide, fronted by a moderately steep beach and 50 m wide bar. Waves average 0.5 m and break across the bar at mid to low tide.