Blue Hole (Dahab)
E303574
Blue Hole (Dahab) is a famous and notoriously challenging marine sinkhole and dive site off the coast of Dahab in Egypt’s Red Sea, known for its deep vertical drop, rich coral life, and history of technical diving accidents.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Blue Hole (Dahab) canonical | 1 |
| Blue Hole (dive site) | 1 |
| Blue Hole area of Dahab | 1 |
Statements (67)
| Predicate | Object |
|---|---|
| instanceOf |
dive site
ⓘ
marine sinkhole ⓘ underwater cave system ⓘ |
| accessFrom | Dahab by road ⓘ |
| approximateDepth | about 100 meters ⓘ |
| archDepthAtBottom | about 120 meters ⓘ |
| archDepthAtRoof | about 52 to 56 meters ⓘ |
| archLength | about 26 meters ⓘ |
| bestKnownSection | the Arch ⓘ |
| connectsTo | open sea via the Arch ⓘ |
| continent | Africa ⓘ |
| country | Egypt ⓘ |
| distanceFromDahab | about 8 kilometers north ⓘ |
| diveType | shore dive ⓘ |
| ecosystem | coral reef ecosystem ⓘ |
| entryType | shore entry ⓘ |
| feature |
blue water column
ⓘ
coral reef walls ⓘ saddle at reef edge ⓘ sheer drop-off ⓘ submerged archway ⓘ vertical sinkhole ⓘ |
| formationProcess | dissolution of limestone and reef structures ⓘ |
| geologicalType | karst sinkhole ⓘ |
| hasPart |
the Arch
ⓘ
the Saddle ⓘ |
| hasReputation |
divers cemetery
ⓘ
one of the most dangerous dive sites in the world ⓘ |
| hazard |
decompression obligation
ⓘ
depth beyond recreational limits ⓘ disorientation in the Arch ⓘ overhead environment in the Arch ⓘ oxygen toxicity risk on inappropriate gas mixes ⓘ strong gas narcosis at depth ⓘ |
| knownFor |
abundant reef fish
ⓘ
challenging dive profiles ⓘ clear visibility ⓘ decompression sickness incidents ⓘ deep diving ⓘ freediving records ⓘ high number of diver fatalities ⓘ nitrogen narcosis risk ⓘ rich coral life ⓘ technical diving ⓘ wall diving ⓘ |
| locatedIn | Red Sea ⓘ |
| locatedInGovernorate | South Sinai Governorate ⓘ |
| locatedInRegion | Gulf of Aqaba ⓘ |
| locatedNear | Dahab ⓘ |
| locatedOnCoastOf | Sinai Peninsula ⓘ |
| marineLife |
hard corals
ⓘ
pelagic species near the Arch ⓘ reef fish ⓘ soft corals ⓘ |
| maximumDepth | over 100 meters ⓘ |
| nearestTown | Dahab ⓘ |
| popularWith |
experienced recreational divers
ⓘ
freedivers ⓘ technical divers ⓘ |
| regulation | local dive centers impose depth limits for recreational divers ⓘ |
| saddleDepth | about 6 meters ⓘ |
| tourismActivity |
freediving
ⓘ
scuba diving ⓘ snorkeling ⓘ |
| visibility | often 20 to 30 meters or more ⓘ |
| waterBody | Gulf of Aqaba ⓘ |
| waterType | saltwater ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Blue Hole (dive site)