Meet the site
Dannevig Island is the southern member of the Glennie Group, named for the Norwegian-born fisheries scientist Harald Dannevig, and its north-eastern tip is listed by Scuba Doctor as a 5–30 m wall dive with one outstanding feature: a large cave at about 25 metres down close to the northern tip of the island, with multiple entrances. The site's structure is a steep rocky slope from the kelp line to about 15 m, giving way to massive boulders between 25 and 30 m that create excellent swim-throughs, and the cave is formed where the largest of those blocks lean together. It is a granite boulder cave rather than a solution cave – roomy, with several openings that admit daylight – but it is deep enough and dark enough inside that a torch and conservative penetration are needed. The walls of the cave and swim-throughs carry the Glennie Group's richest growth: sponges in orange, yellow and purple, zoanthids, bryozoan lace, jewel anemones, gorgonians and sea whips, with bullseyes packed into the roof, blue devils and crayfish in the recesses, and the occasional draughtboard shark or conger eel. Outside, the slope carries perch and sweep schools, boarfish and morwong, and seals from the Glennie haul-outs. Bum Rock, the famous cracked boulder, is 620 m to the south-south-west on the island's western side. Dannevig North East is one of the most distinctive dives in the Glennie Group and is generally the second dive of a club day after Great Glennie or Ramsbotham Rocks, weather permitting; it is reached from the Tidal River beach launch or on the long run from Port Welshpool, and is dived only a few times a year. It suits Advanced divers comfortable at 25–30 m in boulder overheads.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Dannevig Island North East is recorded as Wall in Wilsons Promontory. The listed access is boat. 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.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
- 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 Dannevig Island North East 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 Dannevig Island North East 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
Sponges, zoanthids, bryozoans, jewel anemones, gorgonians, sea whips, bullseyes, blue devils, southern rock lobster, draughtboard sharks, conger eels, butterfly perch, sweep, boarfish, morwong, Australian fur seals
Location
North-east tip of Dannevig Island, the southern island of the Glennie Group, about 3.5 km south of Ramsbotham Rocks and 7 km south-west of Tidal River.
Facilities nearby
Departure from Tidal River beach ramp, Port Welshpool or Sandy Point; No air fills at Tidal River or Port Welshpool; the nearest compressor is roughly 100 km away (Melbourne's south-east or Inverloch/Leongatha area by arrangement) – bring all cylinders or a portable compressor
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
scubadoctor.com.auscubadoctor.com.auscubadoctor.com.auRecord updated 26 Sept 2026. Source claims are being reviewed.