hub.hku.hk · Academic
Anemonefish abundance and boulder-dominant habitat at Basalt Island.
Dive Spot Guide•
火石洲 (西) Basalt Island (West)
Boat-only Sai Kung dive with anemone gardens.
ScubaFreediveSnorkelBoat EntryAdvanced
PinnacleReef
Offshore boat dive; the west bay is sheltered, but waves, tide, and pickup timing drive the plan.
About 火石洲 (西) Basalt Island (West)
Basalt Island (West) is a boat-only Sai Kung dive site known for its anemone garden, boulder fields, and sheltered west-bay routes. The shallow approach leads into reef pockets and anemone-covered rock before the site opens onto sandier water and deeper edges for advanced divers. Plan it as a weather-sensitive offshore trip, because waves, tide, and pickup timing matter more here than a simple shore entry.
•
Research Estimate At 火石洲 (西) Basalt Island (West)
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 8m
AccessChallenging entry effort
Coral HealthHealthy coral
Marine LifeGreat variety
FacilitiesNo facilities
CrowdedQuite busy
Current StrengthModerate current
Surge StrengthModerate surge
Where Is 火石洲 (西) Basalt Island (West)?
This spotNearby spots
Community sourced coordinates.
火石洲 (西) Basalt Island (West) Planning Details
Depth range, seasonality, and planning context.
Reported Depth
4m - 20m
Depth Note
Anemone garden around 4–9 m; deeper areas can extend beyond 20 m.
Best Season
Spring and early summer are usually the calmer, clearer window, though the sheltered west bay can work much of the year.
Typical Conditions
Offshore site with a sheltered west bay, boulder walls, and rougher water around the exposed edges.
Safety & Access At 火石洲 (西) Basalt Island (West)
Hazards, restrictions, and access requirements.
Key Hazards
Boat trafficWaves
Safety Notes
Use a local captain or guide, keep an SMB available, and stay mindful of swell and tidal changes around the island edge.
Access Restrictions
Boat-only in normal planning, with chartered speedboat access from Sai Kung the practical route. Kayak access is only for very experienced paddlers with guides.
Local Intel For 火石洲 (西) Basalt Island (West)
Community notes to help plan your visit.
Scuba
Advanced scuba divers can work the walls, boulders, and deeper plateau; calmer days are best.
Freedive
Free divers can use the sheltered west bay on calm days, but the exposed edge gets rough quickly.
Snorkel
Snorkelling works best in the sheltered sections on calm days, though the more open edges are less forgiving.
火石洲 (西) Basalt Island (West) Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at 火石洲 (西) Basalt Island (West).
Current Snapshot
No data
🌥️Variable
Sunrise
No data
Time
No data
Sunset
No data
Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
No data
Swell
No data
Exposure Profile at 火石洲 (西) Basalt Island (West)
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at 火石洲 (西) Basalt Island (West)
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At 火石洲 (西) Basalt Island (West)
Community dive logs and visit reports for this site.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
Dive Spot Log Averages At 火石洲 (西) Basalt Island (West)
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility8m
Activity
No dive activity logged yet.
Loading nearby spots...
火石洲 (西) Basalt Island (West) Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
火石洲 (西) Basalt Island (West) Guide - Sources and Updates
Last Updated
Research Sources
www.localiiz.com · Community
Boat-only access, no island facilities, wave/tide sensitivity, and popularity for divers and free-divers.
www.oceanicworldwide.com · Tourism
West-bay dive routing, marine life, and Hong Kong seasonal visibility context.
Know this site? Improve Spot Details.
