Giddiup Reef

Victoria, Australia

Depth

20m

Visibility

3m - 8m

Entry

Boat

Experience Level

Beginner

Giddiup Reef

Victoria, Australia

Depth

20m

Visibility

3m - 8m

Entry

Boat

Experience Level

Beginner

About Giddiup Reef

Discovered and named by one of the local divers, this dive site is spectacular. Approximately 1 kilometre from the Point Lonsdale Lighthouse and clear of the shipping channel, just outside Port Phillip Heads, is an amazing area of bommies or underwater rock formations, with a resident moray eel. The strong current flow in this area has created a nutrient rich environment and marine growth is prolific. However, it is the spectacular rock formations that make this dive site so special.

Giddiup Reef Dive Info

Terrain & Features

Rock, Reef

Entry Type

Boat

Max Depth

20m

Visibility Range

3m – 8m

Experience Level

Beginner

Best Gas Mix

21% – 47%

O₂

CNS Load (35 min)

12% at 18m / 36%

O₂

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Marine Life

Moray Eels

Weather Conditions

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Location

Location details missing.

Dive Site Hazards

Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.
Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.
Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

Hidden Depth Variations — Complex reef topography can conceal depth changes, leading to unintended profile variations.

Distraction from Marine Activity — High fish activity can distract divers and delay depth or gas awareness.

Rapid Surge Direction Changes — Surge near reef structures can reverse direction quickly, pushing divers sideways into unexpected areas.

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