Khanom Pink Dolphins
Boat trips off a quiet Nakhon Si Thammarat coast to look for Indo-Pacific humpback dolphins, which turn pink with age.
Updated 28 August 2026
The dolphins off Khanom are Indo-Pacific humpback dolphins, Sousa chinensis, which are born grey and lose pigment as they age until adults appear pink or nearly white - the colour is skin showing through, not a pigment, and it deepens when they exert themselves and the blood flow increases. A resident population of somewhere around fifty uses the shallow coastal waters here, and local boats run trips out in the early morning when the animals are most active near the surface. Sightings are common but not guaranteed and are usually at some distance. The species is listed as vulnerable, and the pressures are the familiar ones: net entanglement, boat strikes, coastal development and water quality. Some operators approach too closely and chase, which is harmful; the reputable ones cut engines and keep back. Khanom itself is a quiet coastal town with beaches and very little tourism infrastructure.
Highlights
- The pink dolphins - adults pale from age, deepening in colour when active.
- The boat trips - early morning departures from the local piers.
- The resident population - around fifty animals using these coastal waters.
- The quiet coast - Khanom's beaches, with little development.
When to go
November to April, and early morning - the animals are most active near the surface at first light and the sea is calmest.
Practical notes
Sightings are likely but not guaranteed, and usually distant. Some operators chase and crowd the animals, which harms them - choose one that cuts engines and keeps back. Khanom has limited facilities and little English.
Nearby
Khanom town and its beaches are alongside; Ko Samui is offshore to the north-west.
What to pack for Khanom Pink Dolphins
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Binoculars - The single best wildlife tool - even a compact pair transforms a sighting. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
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