Blue Hole - Apo Reef
Dropping into Apo Reef’s Blue Hole, you’re looking at a large opening that funnels down to about 27 meters. Inside, the light plays tricks, making it a dramatic, if straightforward, cave dive. We've seen various reef fish around the entrance and occasionally a pelagic passing by in the deeper blue. It’s an intermediate dive, good for those who want a taste of overhead environments without anything too technical.
- Location
- Apo Reef, Philippines, Southeast Asia
- Coordinates
- 12.663000, 122.154200
- Type
- cave
- Maximum Depth
- 27m
- Difficulty
- Intermediate
Best Time to Dive in Apo Reef
The warmest water temperatures in Apo Reef occur in June, averaging 30.3°C. The coolest conditions are in February at 27.8°C.
Monthly Water Temperatures
- January: 28.1°C
- February: 27.8°C
- March: 28.2°C
- April: 29.1°C
- May: 30.1°C
- June: 30.3°C
- July: 29.9°C
- August: 29.6°C
- September: 29.7°C
- October: 29.8°C
- November: 29.5°C
- December: 29.2°C
Nearby Dive Sites in Apo Reef
- 7 Islands Reef, Diving (NDC) (reef)
- Agnay Sanctuary (reef)
- Agpanabat Caves Canyons (cave)
- Agpanabat Sanctuary (reef)
- Akitsushima (wreck)
- Akitsushima (wreck)
- Aladin
- Alad North
- Alad Sanctuary Garden (reef)
- Alad South
- Apo 29
- Apo Island - South (Mabuti) - 25m
- Apo Menor
- Apo Reef (reef)
- Aqualife Divers Academy
Nearest Dive Centres to Blue Hole
Marine Life in Apo Reef
Home to 181 recorded species including 171 reef fish, 5 seagrass & algae, 2 other, 1 whales & dolphins, 1 hard corals, 1 clams & mussels.
Notable Species
- Species code: Ea (Enhalus acoroides) - Seagrass & Algae
- Wrasse (Labroides dimidiatus) - Reef Fish
- Blue-finned Rock Cod (Cephalopholis microprion) - Reef Fish
- Rock Cod (Cephalopholis boenak) - Reef Fish
- cymodocea (Cymodocea rotundata) - Seagrass & Algae
- Orange-lined Triggerfish (Balistapus undulatus) - Reef Fish
- Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
- Two-spot Bristletooth (Ctenochaetus binotatus) - Reef Fish
- Sunburst Butterflyfish (Chaetodon kleinii) - Reef Fish
- Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
- Ghost Cardinalfish (Nectamia fusca) - Reef Fish
- Bandcheek wrasse (Oxycheilinus digramma) - Reef Fish
- Banded Goatfish (Parupeneus multifasciatus) - Reef Fish
- Telescopefish (Epibulus insidiator) - Reef Fish
- Kihikihi (Zanclus cornutus) - Reef Fish
- Red Sea Butterflyfish (Chaetodontoplus mesoleucus) - Reef Fish
- Scarlet wrasse (Pseudocheilinus evanidus) - Reef Fish
- Banded Toby (Canthigaster valentini) - Reef Fish
- Angel abu polos (Centropyge vrolikii) - Reef Fish
- Blue-scaled wrasse (Cirrhilabrus cyanopleura) - Reef Fish
Recommended Packing List for Blue Hole
Based on average water temperature of 29.3°C, currents 8 cm/s.
- Shorty or Rashguard - warm 29°C water needs minimal exposure protection
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories