
San Miguel Slope
Dumaguete · Philippines
San Miguel Slope lies north of Dumaguete City in the barangay of San Miguel, where a long gentle volcanic sand and rubble slope descends from very shallow water to 30 metres and intercepts open-water currents that push in from the Tañon Strait. The combination of nutrient-rich water and complex mixed substrate makes it a strong bet for deep muck rarities — coconut octopus burying themselves with paired shell halves, robust ghost pipefish in multiple colour morphs hovering at hydroid clusters, and hairy frogfish in slow-walk hunting mode across the sand. The moderate current in the 15 to 25 metre zone concentrates longnose hawkfish on sea fans and brings in open-water pelagics like rainbow runners that cruise the slope edge, giving San Miguel a dual character as both muck site and drift
Conditions
Depth
3 to 30 m
Open water and up
Current
Can be moderate
Can pick up on the edge
Visibility
8 to 16 m
Clearest in the calm season
Water
26 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 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 |
| Vis (m) | 8 | 10 | 10 | 12 | 10 | 8 | 8 | 8 | 8 | 10 | 10 | 8 |
| Current | Gentle | Gentle | Gentle | Gentle | Moderate | Moderate | Moderate | Moderate | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Ornate Ghost Pipefish
Last confirmed Apr 22, 2026 · 59 records
Very likely
Most dives
Robust Ghost Pipefish
Last confirmed Jun 21, 2026 · 13 records
Very likely
Most dives
Flamboyant Cuttlefish
Last confirmed Mar 26, 2026 · 26 records
Likely
About 6 in 10 dives
Hairy Frogfish
Last confirmed Mar 27, 2026 · 3 records
Likely
About 6 in 10 dives
Coconut Octopus
Last confirmed Jan 24, 2026 · 2 records
Likely
About 6 in 10 dives
Mandarinfish
Last confirmed Mar 21, 2026 · 2 records
Likely
About 6 in 10 dives
Rainbow Runner
Last confirmed Jul 6, 2025 · 1 records
Sometimes
About 1 in 3 dives
Longnose Hawkfish
Expected
Known here, not yet in recent logs
Gear