Meet the site
Lilli Pilli is a gentle estuary dive about 4.2 km inside Port Hacking and one of the best places in Sydney to see White's seahorses. It lies at the end of Lilli Pilli Road, where a quiet waterfront reserve, the Sea Scouts' boat ramp and a swimming enclosure net front the river. From the ramp the bottom deepens steadily westward: two to three metres about five metres out, then 5–6 m, 9–10 m and shortly 12–13 m. The seabed is sand with patches of seagrass and small rock outcrops, becoming silt with isolated rocks deeper down, and there are large rock ledges further out. The swimming enclosure net and its pylons are the key feature for navigation and for marine life. White's seahorses cling to the net and the seagrass – McFadyen once counted 63 on one dive in April 2005 – and they are the main reason most people come. Other residents include yellowtail kingfish, moray eels, cuttlefish, eastern rock blackfish, blue gropers and several species of rays, along with many small invertebrates for macro photographers. Relics of the waterfront's long history turn up too: old ceramic jars and sherry bottles, and, since February 2024, a scuba-diver statue on the bottom. The water of Port Hacking is generally clear, with visibility sometimes over 15 m, and the current is minimal, unlike at nearby Shiprock. The downsides are the slippery ramp and hundreds of pieces of fishing line near the wharf. There are no facilities at the site, though Caringbah has cafés. White's seahorse is a threatened species in NSW, so divers must not touch or move them and should avoid shining lights directly on them. It suits beginners, night divers and photographers.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Lilli Pilli (Port Hacking) is recorded as Muck/Sand in Sydney South & Botany Bay. The listed access is shore. 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.
- Lines and obstructions
- Discuss any known entanglement concerns and the suitability of the planned area.
- 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 Lilli Pilli (Port Hacking) suitable for my certification?
The record lists 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 Lilli Pilli (Port Hacking) 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
White's seahorse, yellowtail kingfish, moray eel, cuttlefish, eastern rock blackfish (luderick), eastern blue groper, rays, flathead, nudibranchs, seagrass
Location
Estuary shore dive about 4.2 km inside Port Hacking at the end of Lilli Pilli Road, around the swimming-enclosure net and wharves; sand, seagrass and ledges from 2 to 13 m – Sydney's best-known seahorse site.
Facilities nearby
Parking along the gated waterfront roadway (6 am–10 pm); no toilets or showers; cafés in Caringbah; air/nitrox at Pro Dive Cronulla (Gerrale Street, Cronulla) and Abyss (Ramsgate).
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.infoRecord updated 26 Sept 2026. Source claims are being reviewed.
