Portsea Hole (Marine National Park)
Port Phillip Heads Marine National Park (highly protected no-take zone: no fishing, no collecting). Portsea Hole is a small (about 10 ha) sunken remnant of the ancient Yarra River in a vast sand plain, about 1 km north-west of Portsea Pier and marked by four lit yellow special-mark buoys. Depths run from 12 to 32 m, and the reef is covered in sponges, soft corals and other sedentary invertebrates. It is strictly a boat dive at slack water, for experienced divers with tidal diving experience.
Facts
- Region: Southern Australia – South Australia, Victoria & Tasmania
- Area: Port Phillip Heads (Point Lonsdale & Nepean)
- Depth: 12–32 m
- Level: advanced
- Current: strong
- Type: reef, boat, drift
- Coordinates: -38.311083, 144.71095
- Highlights: sunken Yarra River channel, sponges, soft corals, blue devilfish, sand plain edge
- Tips: Slack water only: after slack the ascent becomes hard. Charter or launch from Sorrento or Queenscliff ramps. Know the tide state.