Phuket - Loyalty Islands
Sebastian Reef is one of those Bonaire sites that often gets overlooked for its flashy neighbours, but we think that’s a mistake. While it shares a name with the nearby restaurant, the dive itself is surprisingly tranquil, especially if you hit it early. The reef starts as a gentle slope, maybe 5-6 metres deep, before giving way to a proper wall that drops to about 16 metres. We love how that deeper section is absolutely covered in massive boulder brain corals and blushing star corals, like giant floral arrangements. Keep an eye out for loggerhead turtles cruising the wall, and we’ve often spotted chain morays peeking out from crevices. You’ll see plenty of angelfish and hogfish here, too. For something a bit different, try hugging the sand flats near the shallows on your way back; we’ve found some tiny pearl blennies and yellowline gobies there. The visibility usually sits around 20 metres, offering clear views of the vibrant hard and soft coral tapestry. It’s a comfortable dive for anyone, really, offering a relaxed pace to soak in the beauty of a healthy Caribbean reef.
- Location
- Loyalty Islands, New Caledonia, Australasia
- Coordinates
- -20.836600, 165.384400
- Type
- reef
Marine Protected Area: Povilla Forest Reserve
Best Time to Dive in Loyalty Islands
The warmest water temperatures in Loyalty Islands occur in February, averaging 28.2°C. The coolest conditions are in August at 24.2°C.
Monthly Water Temperatures
- January: 27.9°C
- February: 28.2°C
- March: 28.1°C
- April: 27.6°C
- May: 26.3°C
- June: 25.4°C
- July: 24.7°C
- August: 24.2°C
- September: 24.5°C
- October: 25.2°C
- November: 26.4°C
- December: 27.6°C
Nearby Dive Sites in Loyalty Islands
- Aquarium (reef)
- Aquarium
- Arche aux gorgonnes (reef)
- Arche aux gorgonnes (reef)
- bargibenti (reef)
- Carouso Mio (drift)
- Centre de plongée de Babou
- Chemin des écoliers (reef)
- Dahab de Nous (reef)
- Eagle Paradise (wreck)
- Faille de Poe (wreck)
- FRANCE II - 0m (wreck)
- Grand coude de Kele (reef)
- grande passe (reef)
- Green Turtle (reef)
Nearest Dive Centres to Phuket
Marine Life in Loyalty Islands
Home to 129 recorded species including 93 reef fish, 11 sea cucumbers, 9 sea snails & nudibranchs, 4 clams & mussels, 4 sharks & rays, 3 whales & dolphins.
Notable Species
- Chestnut Blenny (Cirripectes castaneus) - Reef Fish
- Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
- Boring Clam (Tridacna crocea) - Clams & Mussels
- Humphead Unicornfish (Naso unicornis) - Reef Fish
- Batavian Parrotfish (Scarus psittacus) - Reef Fish
- Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
- Black sea cucumber (Holothuria atra) - Sea Cucumbers
- Greenfish (Stichopus chloronotus) - Sea Cucumbers
- dusky farmerfish (Stegastes nigricans) - Reef Fish
- Manini (Acanthurus triostegus) - Reef Fish
- Small giant clam (Tridacna maxima) - Clams & Mussels
- Honeycomb Grouper (Epinephelus merra) - Reef Fish
- Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
- Orange-axil wrasse (Stethojulis bandanensis) - Reef Fish
- Banded Goatfish (Parupeneus multifasciatus) - Reef Fish
- Leopard Blenny (Exallias brevis) - Reef Fish
- Blackedge thicklip wrasse (Hemigymnus melapterus) - Reef Fish
- Pinkfish (Holothuria edulis) - Sea Cucumbers
- Citron Butterfly (Chaetodon citrinellus) - Reef Fish
- Blackspotted Sea Cucumber (Pearsonothuria graeffei) - Sea Cucumbers
Recommended Packing List for Phuket
Based on average water temperature of 26.3°C, currents 10 cm/s.
- Shorty or Rashguard - warm 26°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