About the Port
Scattered across turquoise shallows off the Pilbara coast near Onslow, the Montebello Islands form a low-lying archipelago of coral reefs, sandy cays, and spinifex-covered dunes. Long uninhabited, the islands are now protected as a marine park and conservation reserve, prized for clear waters, healthy coral gardens, and populations of seabirds, turtles, and reef fish that thrive with minimal human disturbance. The islands also carry a striking history, having served as the site of British nuclear tests in the 1950s, traces of which are still marked for visitors' awareness.
Access is by tender, as there are no piers or permanent settlements, and landings depend on calm conditions and conservation guidelines. Time ashore favors snorkeling, birdwatching, and quiet beach walks rather than built attractions, making the Montebellos a rewarding stop for travelers drawn to remote, unspoiled marine landscapes.
Pavlus Recommendations
How our planners would spend a day in Montebello Islands.
Snorkel the Coral Gardens
Slip into clear, sheltered shallows around the cays to see healthy coral and reef fish up close; bring your own gear if you have it, as options ashore are limited.
Walk to a Nuclear Test Marker
Short, level walks lead to markers noting the 1950s British atomic test sites, a sobering counterpoint to the islands' pristine scenery; go with a guide for context.
Scan the Shoreline for Wildlife
Quiet beach walks and dune edges often reveal nesting seabirds and basking turtles; move slowly and keep a respectful distance in this protected marine park.
Cruise Lines That Call Here
Cruises That Visit Montebello Islands
| Departs | Cruise Line | Ship | Itinerary | Nights | From |
|---|---|---|---|---|---|
| Jul 29, 2026 | Ponant Cruises | Le Soleal | 10 | $13,760 | |
| Aug 8, 2026 | Ponant Cruises | Le Soleal | 10 | $13,750 | |
| Aug 20, 2026 | Silversea | Silver Cloud Expedition | 17 | $17,120 | |
| Jul 29, 2027 | Ponant Cruises | Le Soleal | 10 | $14,580 | |
| Aug 8, 2027 | Ponant Cruises | Le Soleal | 10 | $13,190 | |
| Aug 19, 2028 | Silversea | Silver Cloud Expedition | 16 | $16,400 | |
| Sep 4, 2028 | Silversea | Silver Cloud Expedition | 16 | $18,080 |