Meet the site
Tenth of June is one of the best-known dives in the Admiralty Islets and one of the few Lord Howe sites operators list by name. Pro Dive's description is of a deep plateau at 24–36 m with swim-throughs, gutters, tunnels and vertical walls, and Divernet describes a reef with a smaller pinnacle rising close to the surface. Diveplanit lists a '10 June Bombira' among the Admiralty sites, and the island tourism site lists both Tenth of June and Tenth of June Deep.
The Admiralty Islets are washed more directly by the Coral Sea current than the rest of the island, and that shows here. The walls carry extensive soft corals, gorgonian fans and black coral trees, and Pro Dive records black cod up to 180 kg sheltering in the tunnels – a protected species that has become a signature of Lord Howe. Japanese boarfish, a striking deep-bodied fish found around Lord Howe and northern New Zealand, hang under ledges, and the gutters funnel trevally, drummer and other pelagic fish past divers.
On the smaller scale, look for egg cowries on the soft corals, Spanish dancers and other nudibranchs on the walls, and the Lord Howe tricolour fairy basslet around the reef edges. Large silver trevally and unicornfish are common.
The structure gives a lot of variety for one dive: a pinnacle top shallow enough for a relaxed safety stop, a plateau with swim-throughs in the low 20s, and walls that go past 30 m for those qualified to go deeper. It is an intermediate dive in normal conditions and advanced when the current runs, and the depth range means Advanced Open Water is the sensible minimum. It is dived when the wind has any south in it.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Tenth of June is recorded as Pinnacle/Bommie in Lord Howe Island. 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.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
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 Tenth of June suitable for my certification?
The record lists Deep/Advanced + experience. 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 Tenth of June 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
Black cod (to 180 kg), Japanese boarfish, trevally, drummer, kingfish, unicornfish, Lord Howe tricolour fairy basslet, Spanish dancers, egg cowries, nudibranchs, gorgonian fans, soft corals, black coral trees
Location
A reef and pinnacle rising towards the surface in the Admiralty Islets, off the north-east tip of Lord Howe, with a deep plateau, gutters, swim-throughs and walls.
Facilities nearby
Departure from the Lagoon Road boatsheds.
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
prodive.com.audivernet.comdiveplanit.comlordhoweisland.infoRecord updated 27 Sept 2026. Source claims are being reviewed.