Hon Mong Tay – Phu Quoc Dive Site

22m Max

10-25m Vis

boat

Site Overview

Hon Mong Tay is an isolated rock formation in the southern An Thoi archipelago that attracts impressive concentrations of pelagic and reef species drawn by the exposed position and nutrient-rich current flow. The rock rises from 22 metres to just below the surface, its vertical walls and ledges encrusted with gorgonians, sponges, and soft corals that create habitat for diverse invertebrate communities. Schools of barracuda form on the upcurrent side of the rock, while batfish patrol the water column in their distinctive formation flying. The rock surfaces support exceptional nudibranch diversity, with multiple species documented by macro divers who appreciate the invertebrate richness alongside the larger pelagic encounters. Groupers and moray eels occupy the deeper ledges and crevices, and occasional sweetlips shelter on the protected lee side. The combination of pelagic action and macro biodiversity makes Hon Mong Tay one of Phu Quoc's most versatile dive sites, rewarding divers who can appreciate both the big picture and the small details of the marine environment. The exposed position means conditions can be dynamic, adding excitement to the dive profile while requiring appropriate experience and skills. 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. Hon Mong Tay 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 intermediate divers and beyond.

Dive Briefing

"Descend onto the rock formation at approximately 10 metres and orient to the current direction. Explore the vertical walls and ledges at depths of 12 to 20 metres, scanning the open water for barracuda schools and batfish aggregations. The upcurrent side concentrates the best pelagic activity and filter-feeding growth. Circle the formation examining the rock surfaces for nudibranchs, which are diverse and abundant on the gorgonian and sponge growth. Check the deeper ledges at 18 to 22 metres for resting groupers and moray eels. The lee side of the rock provides shelter from the current and hosts different species communities. Ascend gradually along the rock face to the shallower sections for your safety stop, deploying your DSMB before the final ascent. 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."