Cod Hole
Great Barrier Reef · Australia
Far northern Great Barrier Reef site where divers come face to face with potato cod the size of small cars. Years of friendly interaction means the resident pack greets boats. Surrounding bommies host the full Coral Sea reef community.
Conditions
Depth
5 to 30 m
Open water and up
Current
Usually gentle
Can pick up on the edge
Visibility
25 to 40 m
Clearest in the calm season
Water
23 to 30°C
Tropical wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 28 | 28 | 28 | 26 | 25 | 24 | 23 | 23 | 24 | 25 | 26 | 27 |
| Vis (m) | 15 | 15 | 15 | 20 | 25 | 25 | 25 | 25 | 25 | 20 | 20 | 15 |
| Current | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Potato cod
Last confirmed May 9, 2026 · 65 records
Almost always
Nearly every dive
Gigas Giant Clam
Last confirmed Nov 5, 2025 · 15 records
Very likely
Most dives
Whitetip reef shark
Last confirmed Jun 9, 2026 · 9 records
Very likely
Most dives
Pineapple Sea Cucumber
Last confirmed Apr 16, 2026 · 11 records
Very likely
Most dives
Leopard Coralgrouper
Last confirmed Mar 24, 2026 · 13 records
Very likely
Most dives
Green turtle
Last confirmed Oct 26, 2025 · 3 records
Likely
About 6 in 10 dives
Two-Spot Red Snapper
Last confirmed Sep 11, 2025 · 6 records
Likely
About 6 in 10 dives
Maori wrasse
Last confirmed Jul 3, 2025 · 1 records
Sometimes
About 1 in 3 dives
Gear