Blue Ring Flats
Dive site
A wide sandy flat with scattered rubble and coconut shell debris that is one of the most reliable blue-ringed octopus sites in the world. The bay's protected, near-still water and shallow depth — rarely exceeding 12 metres — mean that hunting blue-rings are visible in full daylight, moving across the open sand between rubble hiding spots. Guides know the microhabitats and often locate four or five individuals on a single dive. The same flat hosts wonderpus octopus, flamboyant cuttlefish with their toxic iridescent warning display, and coconut octopus carrying shell halves for portable shelter.
Conditions
Depth
3 to 12 m
Good for beginners
Current
Variable
Can pick up on the edge
Visibility
4 to 10 m
Clearest in the calm season
Water
25 to 30°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 26 | 26 | 27 | 27 | 27 | 26 | 25 | 25 | 26 | 26 | 26 | 26 |
| Vis (m) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Current | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
Your chances of seeing each animal
Blue-ringed octopus
Photo: uwkwaj · CC BY-NC
Sometimes
About 1 in 3 dives
Flamboyant cuttlefish
Photo: Mark Rosenstein · CC BY-NC
Sometimes
About 1 in 3 dives
Coconut octopus
Sometimes
About 1 in 3 dives
Wonderpus octopus
Photo: Dan Schofield · CC BY
Rare
Now and then
Field journal
No sightings recorded here yet.
Upload the first sightingDived here recently?
Your sighting helps us track reef health at this site in real time.
Submit a sightingPlanning to dive Blue Ring Flats?
Your underwater photos help scientists track reef health here in real time.
What to photograph: fish and marine life, coral (especially anything pale or unusual), anything unexpected.
How to capture it: shoot JPEG, keep location on, note your depth and the date.
Dived Blue Ring Flats recently?
Your photos help track reef health.
Up to 10 photos · JPEG or PNG · max 20 MB each
📷
Drag photos here, or tap to select
GPS in your photo will auto-detect the dive site
Gear