Horrocks is a small, laid-back beach town north of Geraldton, set behind a protective reef that creates a sheltered lagoon popular with families. Marine Life Network describes rocky offshore reefs of 8-20 m with ledges and swim-throughs and various reef species, noting that the water is clearer than at Geraldton, the outer reef is even better, and the site is dangerous in swell.

The limestone reef supports the Mid West mix of buffalo bream, western king wrasse, baldchin groper, dhufish, sweep and rock lobster, with sponges and soft corals in the ledges. It is a destination for self-sufficient divers with their own gear, perhaps staying in the Horrocks caravan park. The nearest air fills are in Geraldton.

Horrocks is about 100 km (1 hour 10 minutes) north of Geraldton: take the North West Coastal Highway to Northampton, then Horrocks Road west (about 20 km). Park along the foreshore; Marine Life Network notes 4WD shore access to reef entries. Small boats can launch from the beach to reach the outer reef.

Horrocks is protected by an inshore reef that forms a lagoon, but Marine Life Network warns the reefs are dangerous in swell. Like Geraldton it is subject to strong afternoon southerlies from October to April. Dive in the morning, in swell under about 1 m.

Strong south to south-westerly winds make the lagoon choppy and turn the outer reef white.

Enter from the beach or boat, explore the ledges and swim-throughs at 8-15 m, avoiding swim-throughs if any surge is running.

No operator – independent divers; air fills in Geraldton.