Meet the site
Whalebone is one of the five Muiron sites that the Aussie Marine Adventures series names as the most popular — with Keyhole, Cod Spot, Fraggle Rock and Dinner Plates — all fitted with public moorings to protect the reef from anchors. Depths across these sites range from 8 to 25 m.
The site is best known for glassfish. Salt & Charcoal singles out Whalebone for abundant glassfish, which fill the overhangs and swim-throughs in shimmering curtains and part around divers as they pass. Predators patrol the edges of the schools — coral trout, cod and trevally — making it a good site to watch hunting behaviour. The surrounding reef has the Muirons' mix of hard corals, soft corals, sponges and gorgonian fans, with nudibranchs for macro fans, and turtles and reef sharks are common.
It is a straightforward moored dive suitable for Open Water divers, with the swim-throughs open and short. Good buoyancy is important to avoid damaging the reef and to keep the glassfish undisturbed for photos.
Muiron coral condition declined after the 2025 marine heatwave and Dive Ningaloo paused Muiron trips in August 2025. Other operators may still include Whalebone on their Muiron days.
About the Muirons: North and South Muiron are two low, uninhabited limestone islands about 15 km north-east of the tip of North West Cape, protected within the World Heritage-listed Muiron Islands Marine Management Area. They are reached only by boat, which has kept the surrounding reefs relatively untouched. The waters are visited by dolphins, dugong, pilot whales and, from July to October, migrating humpback whales, and turtles nest on the island beaches in summer. The islands are well known for strong currents and changeable conditions, so dives are always chosen on the day by the skipper according to wind, swell and tide, and a day on the Muirons usually combines two sites with lunch on the boat in the lee of the islands.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Whalebone is recorded as Reef in Ningaloo – Exmouth. The listed access is boat (day trip). Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Overhead environments
- Ask whether the plan stays entirely in open water. A wreck or cave listing is not permission or training to enter.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is Whalebone suitable for my certification?
The record lists Advanced Open Water. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book Whalebone through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Glassfish schools, coral trout, cod, trevally, turtles, reef sharks, nudibranchs, soft and hard corals, sponges, gorgonians
Location
Popular moored Muiron Islands site known for swim-throughs full of glassfish.
Facilities nearby
Departure facilities at Exmouth Marina (toilets, fuel, parking) or Bundegi ramp; air fills in Exmouth.
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
saltandcharcoal.codiveningaloo.com.auaussiemarineadventures.com.auaustraliascoralcoast.comtravel2next.comexploreparks.dbca.wa.gov.auRecord updated 27 Sept 2026. Source claims are being reviewed.