Meet the site
Ramsbotham Rocks lie off the north-east tip of Great Glennie Island, the closest corner of the Glennie Group to Tidal River, and Scuba Doctor lists them as a 20–30 m wall dive with interesting rock formations and large boulders with caves and swim-throughs, descending to a sandy bottom around 30 m. The site's practical importance is stated in the listing: it is a sheltered spot to dive, especially if there is a south-easterly wind blowing, and since the Prom's diveable days are so often south-easterly-wind days after a change, Ramsbotham Rocks is where a Tidal River-based boat frequently ends up. The dive is entirely in the 20–30 m band, which makes it an Advanced dive despite the shelter: the rocks are giant granite blocks fallen from the island and piled on the sand, leaving caves, tunnels and overhangs between them that a diver can move through, with the boulder tops at about 20 m. At that depth the kelp is gone and the granite is covered in the Glennie Group's sponge, zoanthid and gorgonian growth, with bryozoans and jewel anemones in the caves, crayfish in the recesses, and the perch, sweep and bullseye schools that gather around isolated structure. Seals from the Glennie haul-outs and the occasional visiting kingfish add movement, and draughtboard sharks and blue devils use the caves. The depth limits bottom time and the site is best on nitrox. It combines naturally with a shallower second dive on Great Glennie's eastern slopes or a seal snorkel, and it is the Glennie Group's bad-weather option – dived more often than the group's exposed western walls precisely because it is available when they are not.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Ramsbotham Rocks 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.
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 Ramsbotham Rocks 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 Ramsbotham Rocks 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, gorgonians, bryozoans, jewel anemones, southern rock lobster, butterfly perch, sweep, bullseyes, draughtboard sharks, blue devils, Australian fur seals, kingfish
Location
Rocks off the north-east tip of Great Glennie Island in the Glennie Group, about 5 km 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.