Dive site · access from Cairns & Outer Great Barrier Reef
Flynn Reef
Flynn Reef: Outer-edge coral terrain.
- Depth
- 5–30m
- Current
- Moderate
- Minimum level
- Open water
- Access
- Boat
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The case for it
Why dive here
- Outer-edge coral terrain
- Bommies and swim-around formations
- Used by multi-day boats
Check before booking
What may rule it out
- Moderate current can affect whether the site is suitable on the day.
Access and timing
Plan this through Cairns & Outer Great Barrier Reef
Best overall months: Jun, Jul, Aug, Sep, Oct. Check the destination planner for operating season, wildlife and other matching sites.
Wildlife
Seen around Cairns & Outer Great Barrier Reef
rareoccasionalcommonly seenpeak seasondestination closed
These are destination-level records, not confirmed sightings at Flynn Reef.
Humpback whale
| Month | Likelihood |
|---|---|
| January | rare |
| February | rare |
| March | rare |
| April | rare |
| May | rare |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | rare |
| November | rare |
| December | rare |
Potato cod
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Reef manta ray
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Grey reef shark
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Hawksbill turtle
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Nearby alternatives
Compare another site
Sources & last checked
Checked September 2026
Research is source-backed, but conditions and fees should still be confirmed locally.
View 1 source and checking notes
- Stay on the Reef 2026–27 brochure, Divers Den
Note on the data: Coordinates are approximate; not surveyed dive-site GPS.