Meet the site
Point Perpendicular is the towering northern headland of Jervis Bay, named by Captain Cook in 1770 and topped by the 1899 lighthouse. Below its cliffs is a series of dive sites, and the Sponge Gardens (also called Lighthouse Reef) is the classic multilevel dive among them. The bottom is sand at about 34 m, from which huge boulders covered in sponges and sea squirts rise towards the cliff, with smaller rock formations between them.
As divers ascend northward the boulders form gullies and swim-throughs, and in the 5–7 m zone huge rocks balanced on other rocks create excellent swim-throughs and a couple of very large caves. The colour is the draw: sponges, sea squirts, gorgonians in pink and red, and purple sponges cover the deeper rock, and Deep 6 describes delicate corals and colourful tunicates. Fish life changes with depth – black reef leatherjackets, wobbegongs, firefish and giant cuttlefish on the deeper boulders, grey nurse sharks occasionally below 30 m, and huge schools of yellowtail, seapike, ladder-finned pomfret, mullet, silver bream and sweep in the shallows. Port Jackson sharks arrive in early winter.
The flexibility of the profile – deep sponge gardens for Advanced divers, shallow caves for everyone – makes it one of the most regularly dived sites in Jervis Bay, and one of the listed marine park snorkelling spots in calm weather. The cliff-top lighthouse is visible from the boat but not open to the public; road access to the headland is through the Beecroft Weapons Range when it is open. From the water, divers should still check for live-firing closures.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Point Perpendicular Sponge Gardens is recorded as Reef in Jervis Bay. 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.
- Other water users
- Ask about vessel activity, exclusion areas and the agreed surface arrangements.
- 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.
- 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 Point Perpendicular Sponge Gardens 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 Point Perpendicular Sponge Gardens 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 reef leatherjackets, wobbegongs, Port Jackson sharks (early winter), grey nurse sharks (occasional), giant cuttlefish, firefish, yellowtail, seapike, ladder-finned pomfret, mullet, silver bream, sweep, sponges, sea squirts, gorgonians
Location
Huge sponge-covered boulders rising from sand at 34 m to caves and swim-throughs at 5–7 m below the Point Perpendicular lighthouse cliffs at the northern entrance of Jervis Bay.
Facilities nearby
Departure from Huskisson: Dive Jervis Bay shop (air, nitrox, hire), cafés, parking; Huskisson and Callala ramps.
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
michaelmcfadyenscuba.infodeep6divingjervisbay.com.aublog.padi.comdefence.gov.auRecord updated 27 Sept 2026. Source claims are being reviewed.