Meet the site
Lagoon Pier is the northernmost of the Port Phillip pier dives and one of the closest pieces of diveable structure to the Melbourne CBD. Built in 1889 at the head of Hobsons Bay, it runs roughly 300 m out from the Port Melbourne beach and is unusual among the bay's piers for being narrow and slightly curved, which gives the dive a different feel from the broad, square timber decks at Brighton or Mordialloc. The name records a lagoon that once ran inland from here and was progressively filled by 1929; the adjacent land was the HMAS Lonsdale naval depot until the 1990s and is now apartments. The pier is a public berthing pier, so small craft tie up along it for up to 48 hours. Underwater it is a shallow silt-and-sand dive. Depth is barely a metre at the beach and only reaches about 4 m at the outer end, so the whole dive is spent among the pylons. The piles carry a modest growth of mussels, tubeworms, sea squirts and bryozoans, with the usual Port Phillip pier tenants: Tasmanian blennies in the crevices, southern cardinalfish, small leatherjackets, toadfish, decorator crabs and the occasional seahorse or pipefish on the weed beds beside the structure. Look under the odd piece of debris on the sand for octopus. Because the bottom is fine mud, visibility is easily wrecked by careless finning and is rarely more than a few metres even on a good day. It is not a destination dive. Its value is as a quick, safe, very shallow site for checking new gear, running a first night dive, practising navigation, or snorkelling with children, and for divers living in the inner suburbs who want to get wet in half an hour rather than drive to the peninsula. Combine it with Kerferd Road Pier, a kilometre to the east, for a two-tank morning.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
Lagoon Pier is recorded as Jetty/Pier in Melbourne & Port Phillip 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.
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 Lagoon Pier 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 Lagoon Pier 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
Seahorses (occasional), pipefish, Tasmanian blennies, southern cardinalfish, leatherjackets, toadfish, decorator crabs, octopus, sea stars, mussels and ascidians on piles
Location
Narrow 300 m timber pier on the Port Melbourne foreshore off Beach Street, between the Port Melbourne Yacht Club and the Port Melbourne Life Saving Club, at the north-east corner of Port Phillip.
Facilities nearby
Metered car park off Beach Street; public toilets; yacht club and life saving club kiosks and change rooms; cafes along Bay Street; nearest air fills Dive Victoria Group or Scuba Culture
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.auRecord updated 26 Sept 2026. Source claims are being reviewed.
