About this spot
Portsea Hole is a distinctive depression on the seafloor of Port Phillip, located near Portsea in Victoria, Australia. Situated within the Port Phillip Heads Marine National Park, this site protects one of southeastern Australia's most accessible underwater environments. The hole draws divers interested in exploring a unique geological feature while observing the marine life that inhabits Port Phillip's waters. The site benefits from protection as part of the marine national park system, which manages recreational diving to preserve the ecosystem. Portsea Hole is accessible year-round, making it a reliable option for local and visiting divers planning their trips. The location's proximity to Melbourne makes it a practical choice for divers based in Victoria who want consistent bottom time without long travel distances. Divers visiting Portsea Hole can observe species documented in Port Phillip's waters, with 12 recorded species observations available through local diving records. Community-contributed videos provide visual reference for planning dives and understanding site conditions. The seafloor depression creates distinct diving experiences compared to flat or sloping terrain, offering divers a chance to explore Port Phillip's underwater topography.
📖 Guide: Diving in Australia: 61 Sites from Coral Reefs to Cold-Water Wrecks
Best months
Dive types
Trip essentials
Everything you need before you pack — checklist, sun, logistics.
Trip checklist
- 🛂 Visa-free or visa-on-arrival
- 🤿 Pack: 7 mm semi-dry
- 📜 C-card + dive insurance (DAN)
- 📔 Dive logbook
- 🧴 Reef-safe sunscreen SPF 50+
- 🔌 Plug type I · 230V adapter
- 💊 Seasickness meds + ear drops
- 📱 Offline maps + emergency contact
Quick facts
- 🌓 Moon First quarter · 47%
- 🤿 Wetsuit 7 mm semi-dry
- GPS
› Sustainability disclosures
From your departure country
- Visa: e-Visa · 90 days max
- Flight: 16h · direct
- Jet-lag: 9h east · 6 days recovery
FAQ
›When is the best time to dive Portsea Hole?
Portsea Hole is diveable year-round. There is no seasonal closure, though local conditions and water temperature may vary throughout the year. Check current conditions with local dive operators before planning your trip.
›What marine life can I see at Portsea Hole?
Twelve species observations have been recorded at the site. Community videos and local dive records provide detailed information about species present. Species diversity reflects Port Phillip's temperate marine environment.
›Is Portsea Hole in a protected area?
Yes. Portsea Hole is located within Port Phillip Heads Marine National Park. Divers must follow marine park regulations and guidelines for recreational diving in protected waters.
›How do I access Portsea Hole?
Access and permit requirements are determined by Port Phillip Heads Marine National Park management. Contact local dive operators or park authorities for current entry conditions, boat access, and any necessary permits before diving.
