Harm clusters on Coron overhead, Monad Shoal current, Tubbataha remoteness, and bangka weather. This is not medical advice.
A cancelled crossing is a safety decision.
Hazards
- Wreck silt and lost exits — Coron.
- Blue-water current at Monad Shoal — Dawn, pelagic, separation.
- Remote DCI on Tubbataha — A ranger station, not a hospital.
- Monsoon crossings — Bangka and liveaboard.
- Boat traffic in Puerto Galera — A working harbour.
- Sun and dehydration — Equatorial decks.
Rules
- Park and barangay briefs — Always.
- No untrained penetration — The wreck chapter.
- SMB on shoals and walls — The pickup rule.
- No chase on threshers — The shoal brief.
- Respect the Tubbataha calendar — There is no off-season hotel.
Red flags
- A guide selling a hold to OW cards — Walk.
- A bangka in a gale warning — Stay ashore.
- Someone herding a thresher — The dive is already failed.
- Chest pain a night from Puerto Princesa — Emergency path.
First response
- Boat oxygen and the nearest chamber pathway (Cebu, Manila, Palawan) — Not a DCI protocol page.
- Coral and wreck cuts — Clinic over folklore.
- Not medical advice — Remote care is a plan the operator should already have.
Philippine safety is a monsoon call and a no on the hatch. The Sulu Sea can wait for its month.