Fingernail Island – Phu Quoc Dive Site

18m Max

8-18m Vis

boat

Site Overview

Fingernail Island, an extension of the Hon Mong Tay formation, is Phu Quoc's premier macro diving destination and a dedicated critter hunting site that rivals the best muck diving locations in Southeast Asia. The rocky slope and rubble habitat at depths of 5 to 18 metres supports an extraordinary diversity of rare and well-camouflaged marine species. Ghost pipefish are regularly encountered hovering motionless among the sea fans and rubble structures, their remarkable camouflage making them a thrilling discovery for patient observers. Frogfish in various colour morphs perch on rocky surfaces, waiting patiently for prey with their extraordinary lure mechanism. Harlequin shrimp, among the most beautiful and sought-after subjects for underwater photographers, have been documented on the rocky substrate feeding on starfish. The nudibranch diversity is exceptional, with numerous chromodoris and aeolid species adding colour to the rubble habitat. Octopus hunt actively across the substrate, displaying their remarkable intelligence and colour-changing abilities. The shallow depth profile allows for very extended bottom times, ideal for the patient searching and careful observation that productive macro diving demands. Fingernail Island proves that Phu Quoc's diving extends beyond coral reefs into the fascinating world of critter hunting and rare species discovery. The site offers an exceptional underwater experience with diverse marine habitats ranging from shallow coral gardens to deeper reef walls where larger pelagic species patrol the blue water. Fingernail Island represents one of Vietnam's finest diving destinations in the Phu Quoc region, combining healthy coral ecosystems with abundant tropical fish life and consistently warm water temperatures throughout the diving season. The well-preserved marine environment supports a remarkable biodiversity that includes both resident reef species and seasonal visitors, making every dive a unique encounter with Vietnam's rich underwater heritage. Whether you are exploring the colourful shallows or venturing deeper along the reef structure, the combination of excellent visibility, warm water, and diverse marine life creates an unforgettable diving experience suitable for beginner divers and beyond.

Dive Briefing

"Descend to the rocky slope at approximately 10 metres and begin a slow, systematic search pattern along the habitat transitions between rock, rubble, and sand. Ghost pipefish are typically found near sea fans, wire coral, and rubble structures at depths of 8 to 14 metres, often matching their surroundings perfectly. Frogfish require patient scanning of rocky surfaces and coral rubble, with different colour morphs blending into various backgrounds. Examine individual rock formations and gorgonian branches for harlequin shrimp, typically found in pairs near their starfish prey. Nudibranchs are abundant on the rubble surface and sponge growth, with diversity highest between 10 and 15 metres. Octopus hunt across the open substrate and shelter in rubble crevices. Maintain excellent buoyancy to avoid disturbing sediment, which reduces visibility and displaces the small creatures. Conclude with a shallow exploration at 5 to 8 metres for additional macro subjects before your safety stop. Throughout the dive, maintain awareness of your depth and bottom time while enjoying the diverse marine life that inhabits this reef system. The topography provides excellent opportunities for both wide-angle and macro photography, with larger species visible in the blue water off the reef edge and smaller critters hidden among the coral formations and rocky crevices. Remember to complete your safety stop at five metres in the shallow reef zone where colourful anthias and butterflyfish provide excellent visual interest during the mandatory three-minute pause. Current conditions are typically manageable with proper planning, and the site rewards patient divers who take time to explore the various microhabitats scattered across the reef structure."