Wyargine Point is the sandstone headland that separates Edwards Beach, the northern half of Balmoral, from Chinamans Beach, and its foreshore is a small bushland reserve with Aboriginal middens and a rock platform. Underwater it is the only real reef on the Balmoral strip: where the baths are sand and seagrass, the point is tumbled sandstone boulders and ledges with kelp on top and shaded undersides, running from the shallows around the point to a sand line at 8–10 m. It has never been written up by the dive operators, but it is snorkelled and dived by locals, and the Wyargine Aquatic Friends group's campaign for an aquatic reserve here rests on surveys that record a good range of harbour reef life.

That life is what you would expect of a sheltered Middle Harbour point: blue groper, luderick, bream and old wives around the boulders, Port Jackson sharks in winter, wobbegongs occasionally, cuttlefish and octopus in the crevices, stingarees and flathead on the sand, White's seahorses and pipefish in the seagrass and on the kelp at the point's base, and juvenile tropical fish in autumn. Sponges and ascidians colour the deeper ledges. Visibility is harbour-standard, 3–7 m.

Its virtues are proximity and quiet: it is 300 m from the baths, parking and cafes, never crowded, and gives a reef dive on days when a swell makes the ocean sites unattractive. Its limitations are shallow depth, modest visibility and a lack of any published guide, so treat depths and layout here as indicative. Wyargine suits Open Water divers and snorkellers looking for an easy second dive after the baths, and night divers who want boulders rather than net.

From Mosman follow Raglan Street to The Esplanade and drive north along the beachfront to the Edwards Beach end (parking on The Esplanade and in Botanic Road; metered by day). Walk to the northern end of the sand where the Wyargine Point reserve begins; enter from the beach and swim 50–100 m north-east along the rocks, or at high tide step in off the low sandstone shelves of the point. The boulder reef lies around the point toward Chinamans Beach.

Exit back onto Edwards Beach.

Deep inside the harbour these sites see no ocean swell; only a strong southerly or south-easterly wind raises a chop, and even then the dive usually goes ahead. What matters is water quality and tide. Dive on the incoming tide or at high water, when the flood brings cleaner ocean water up the harbour and the shallow margins have enough depth; low tide exposes rock and shortens the dive.

Visibility is normally 3–7 m and can reach 10 m on a winter flood; after heavy rain the harbour runs brown for several days and visibility drops to a metre. Boat traffic is heavy on summer weekends. Night dives are the best dives.

The point faces east-south-east and picks up a little more wind chop and boat wash than the baths, and the rocks are slippery at low tide; dive it at high water on a calm day.

From the northern end of Edwards Beach swim out over sand at 3–4 m and follow the boulders and kelp around the point with the rocks on your left, working down to the sand line at 8–10 m; turn at half air and return shallower over the reef top and the seagrass toward the beach. Keep close to the rocks – small craft cut the corner of the point.

No operator lists it; independent local divers, snorkellers and the Wyargine Aquatic Friends community group, which surveys the point's marine life.