Six plages, une courte marche

Manly Beach is patrolled by surf lifesavers from September to April, with daily flagged swimming zones at North Steyne, Queenscliff and South Steyne. Always swim between the red and yellow flags — that's the safest patch of water on the day. Shelly, Fairy Bower and Little Manly Cove are not patrolled; they are calmer harbour-side swims best suited to confident swimmers and families with adult supervision.

Little Manly Cove on the harbour side is the local pick for small children — netted, shallow, and almost always calm, five minutes' walk from the ferry. For older kids, Shelly Beach has natural rock pools and excellent first-time snorkelling inside Cabbage Tree Bay Aquatic Reserve.

Shelly Beach inside Cabbage Tree Bay Aquatic Reserve is one of Sydney's best snorkelling spots. The reef off the southern headland holds blue gropers, weedy sea dragons and the occasional octopus. EcoTreasures runs guided snorkel tours daily if you'd rather have someone point things out, and gear can be hired from Dive Centre Manly on the wharf.

Sharks live in all NSW coastal waters, but bites are extremely rare. Manly Beach has shark spotters and drone surveillance during patrolled hours, and Little Manly Cove is fully netted. Swimming between the flags during patrolled hours and avoiding dawn and dusk are the standard precautions locals follow.

Dogs are allowed off-leash at Little Manly Beach early morning and late evening year-round, and at the northern (Queenscliff) end of Manly Beach outside patrolled hours in summer. Council rangers do patrol — check Northern Beaches Council signs at each beach for current times.

Water temperature peaks in late February and March at around 22–24°C, with the calmest seas and warmest air. December and January are warmest on land but busier. Winter swimming (June–August) is bracing at 17–18°C but popular with the Bold & Beautiful ocean swimmers who set off from Shelly at 7am daily.