Thailand · Chumphon
Boat-access reef in Mu Ko Chumphon with bird-nesting restrictions.
Boat-access reef in Mu Ko Chumphon with bird-nesting restrictions.
Boat access and park logistics make this an operator-led stop.
Ko Ngam Yai is an offshore boat-access site in Mu Ko Chumphon where access onto the island is restricted to protect nesting birds. The reef is known for hard coral, scattered rock structure and steady schools of fish, with sightings that can include triggerfish, pufferfish, stingrays and flounders. It suits relaxed snorkeling and recreational diving when the sea is calm.
Site Conditions
Safety Notes
Access onto the island is restricted due to swallow bird nesting areas.
Access Restrictions
No land access to the island; respect bird-nesting protection and follow skipper or park guidance.
Legal Notes
This is a protected marine-park area, so park rules and any trip fees or entry fees may apply. Stay within allowed access zones and do not land on the island.
Community notes to help plan your visit.
Scuba Diving
Scuba here is a straightforward boat dive with rock and coral structure, schooling fish and limited land access. It is a better fit for relaxed recreational diving than for technical profiles.
Freediving
Freediving can work in calm weather, but this is an offshore boat site with park rules and weather sensitivity, so keep plans conservative and dive with proper surface support.
Snorkeling
Snorkeling is the easiest way to enjoy the hard coral and fish activity around the island when the sea is calm.
Species commonly reported at this site, with direct links into their wildlife guides.
Conservative baseline from public research. No community dives logged yet.
Last Updated
Research Sources

Hua Chedi Koh Ngam Yai is a shallow Chumphon check-dive reef.

Twin-pinnacle Chumphon site with caves and schooling reef life.

Smaller limestone island dive with swim-throughs and reef life.