Zhaori Hot Spring Halocline
Dive site
One of only three submarine saltwater hot springs in the world. Boiling saline water at 53C vents through cracks in the reef at 1 to 3 metres, creating shimmering halocline columns where fresh thermal water meets cold seawater. The visual effect — dancing refractive columns rising from the reef — is unlike anything else in diving. Safe to approach from the side; direct entry into the vent is off-limits.
Conditions
Depth
1 to 10 m
Good for beginners
Current
Variable
Can pick up on the edge
Visibility
15 to 22 m
Clearest in the calm season
Water
19 to 29°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 20 | 19 | 21 | 23 | 25 | 26 | 27 | 27 | 27 | 25 | 22 | 20 |
| Vis (m) | 8 | 8 | 10 | 12 | 15 | 15 | 12 | 12 | 15 | 15 | 12 | 8 |
| Current | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
Your chances of seeing each animal
Convict surgeonfish
Sometimes
About 1 in 3 dives
Green sea turtle
Photo: MARC MARTIN SOLA · CC BY-NC
Sometimes
About 1 in 3 dives
Sergeant major
Photo: François Libert · CC BY-NC-SA
Sometimes
About 1 in 3 dives
Damselfish
Sometimes
About 1 in 3 dives
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 Zhaori Hot Spring Halocline?
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 Zhaori Hot Spring Halocline 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