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Coral Island boat-tour page describing the island as relatively protected.
Dive Spot Guide•
Koh Hey/Coral Bay
Phuket bay with a shallow wreck, coral slope, and south drift
Local operator required
Boat transfer and sea-state checks are normally handled by a Phuket dive center.
Boat-access Coral Island bay with reef-to-sand terrain, a shallow wreck, and an optional southbound drift that gets more exposed as you leave the bay.
About Koh Hey/Coral Bay
Koh Hey/Coral Bay is a boat-access bay on Coral Island off Phuket with a shallow wreck, coral-covered slopes, and a sandy bottom that opens into a southbound drift line. It suits scuba and snorkeling on calmer days, but visibility swings a lot and the open-water exit into the drift section makes sea-state planning matter.
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Research Estimate At Koh Hey/Coral Bay
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 10m
AccessSimple entry
CoralMixed health
Aquatic LifeAverage variety
FacilitiesBasic facilities
Crowd / PopularityQuite busy
CurrentModerate current
SurgeFlat calm
Where Is Koh Hey/Coral Bay?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Koh Hey/Coral Bay Planning Details
Depth range, seasonality, and planning context.
Reported Depth
8m - 40m
Depth Note
Small wreck around 8 m; drift to the south with depth up to about 40 m.
Best Season
November to April
Typical Conditions
Visibility can run from 3-5 m on poor days to 20 m+ on good days; the southbound drift section feels more open than the bay itself.
Safety & Access At Koh Hey/Coral Bay
Site conditions, restrictions, and access requirements.
Site Conditions
Boat trafficLow visibilityStrong current
Safety Notes
Treat the southbound drift section as a current-exposed exit and keep spacing from tour traffic in the bay.
Access Restrictions
Boat access only; schedule around Phuket departures and sea-state checks.
Legal Notes
Follow local island and operator rules and keep clear of tourist traffic.
Local Intel For Koh Hey/Coral Bay
Community notes to help plan your visit.
Scuba Diving
Scuba follows the coral slope and shallow wreck; on suitable days, the route can continue south into a drift over sand.
Freediving
Best as a shallow freedive near the calmest parts of the bay; the drift line is better suited to scuba.
Snorkeling
Good snorkeling in calmer water over the shallow coral and reef-fish areas.
Wildlife at Koh Hey/Coral Bay
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Koh Hey/Coral Bay
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Koh Hey/Coral Bay
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility10m
Activity
No dive activity logged yet.
