North Beach is a short stretch of coast just north of Mettams and Hamersley pools, with a small jetty and rock wall and scattered limestone outcrops offshore. The Marine Life Network describes a shore dive of 5–10 m over small weedy outcrops of limestone, with smaller fish and colourful invertebrates, and notes that it is exposed and needs low swell, so summer is preferred. A snorkelling guide describes the North Beach jetty area as often overlooked, easy to access and rarely crowded, with reef, a rock wall and schools of fish.

The limestone outcrops carry algae, sponges and small invertebrates such as nudibranchs, sea stars and feather-duster worms. Fish include wrasse, stripeys, old wives, buffalo bream and leatherjackets, and small schools gather around the jetty.

This is a modest site, useful when Mettams is crowded and conditions are calm. It suits snorkellers and beginner divers looking for a short, quiet dive close to the northern suburbs.

Published information is brief and depth figures come from a single source. It sits within Marmion Marine Park, so check zoning if fishing, and keep a lookout for boats and paddlers.

As with all Sunset Coast sites, the most reliable conditions are on glassy mornings in late summer and autumn after several days of easterly winds, and entry beside the jetty is easiest at mid to high tide. Cafes nearby make it an easy early-morning outing. Water temperatures are about 17 °C in winter and 22–23 °C in late summer. Carry a cutting tool, as anglers use the jetty.

From Karrinyup Road or North Beach Road head west to West Coast Drive at North Beach, just north of Mettams and Hamersley pools. Park in the beachside car parks near the North Beach jetty and walk down to the sand. Enter from the beach beside the jetty or rock wall and snorkel or dive over the nearby limestone outcrops.

Allow about 20 minutes from the Perth CBD.

Perth's northern coast is far more exposed to ocean swell than the Cockburn Sound sites. North Beach is exposed to the weather and needs low swell, which in practice means summer mornings with easterly winds. The sea breeze makes it choppy by midday.

Winter swell and storms make it undiveable.

Enter beside the jetty, follow the rock wall, then swim out to the limestone outcrops in 5–10 m and circle them before returning.

No operator; occasional independent divers and snorkellers.