Meet the site
Jimmy's Cave is one of several dedicated cave and cavern features that make Seal Rocks' underwater topography distinctive among mid-north-coast dive sites, sitting at a genuinely deep 33 to 34 metres and requiring torches to appreciate fully. The cave's signature feature is a large inner chamber nicknamed 'the ballroom', spacious enough to hold a group of divers comfortably and typically filled with a dense, swirling mass of ladder-finned pomfret that gives the space a dramatic, almost theatrical quality when lit up by dive torches. Spider lobsters are a reliable find in the cave's crevices and ledges, adding a macro-interest layer to what is otherwise primarily a topography and fish-life dive. Given its depth, Jimmy's Cave sits at the edge of standard recreational limits and inside an overhead environment, so it is recommended only for divers with cave or cavern training or, at minimum, very close supervision from an experienced local guide familiar with the cave's layout and any hazards. The site is usually dived alongside the neighbouring Interlinked Caves and Labyrinth system as part of a broader Seal Rocks cave-diving excursion, since all three sit in a similar area and depth range. This cluster of caves is a major reason Seal Rocks stands out from otherwise broadly similar mid-north-coast reef and pinnacle sites, offering genuine cavern topography rather than just open reef, and it rewards divers with the training and experience to explore it properly and safely. Bring a reliable primary and backup light, since the ballroom's full effect and the spider lobsters in the surrounding cracks are easy to miss without good illumination at this depth.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Jimmy's Cave (Seal Rocks) is recorded as Cave/Cavern in Forster & Seal Rocks. 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.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- 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 Jimmy's Cave (Seal Rocks) suitable for my certification?
The record lists Cave/Cavern certification. 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 Jimmy's Cave (Seal 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
Ladder-finned pomfret (dense schools in the 'ballroom' chamber), spider lobsters, general cave-dwelling invertebrates
Location
A cave system at Seal Rocks reaching 33-34 m, home to spider lobsters and a large inner chamber known as 'the ballroom' filled with ladder-finned pomfret.
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
mudgeediveandtravel.comRecord updated 26 Sept 2026. Source claims are being reviewed.