Tell someone there are pink dolphins ninety minutes from Koh Samui and you'll get the same skeptical look every time. We understand, it sounds like a marketing invention. But the pink dolphins of Khanom are wild, resident and very real, and going to meet them is one of the most quietly magical days you can have from Samui. It's also one of the least known, which is exactly why we love it.
Yes, actually pink
The animals are Indo-Pacific humpback dolphins (Sousa chinensis). They're born dark grey and lose pigment as they mature, until many adults turn pale, and the pink you see isn't pigment at all. It's blood flow beneath thin skin, the same way a face flushes: the more active and warm the dolphin, the rosier it glows. A small population lives permanently in the calm, food-rich bay off Khanom, following the tides and the fishing boats they've learned to work alongside.
Where is Khanom - and when to go
Khanom is a sleepy fishing district on the mainland coast, just south of Donsak where the Samui ferries land. No high-rises, no beach clubs - just long, empty sand and a working harbour. Because the dolphins are residents, not migrants, there's no season to chase: they can be seen all year round. Calm mornings give by far the best conditions, and local skippers find them on the large majority of outings. They are wild animals, though - sightings are very likely, never guaranteed, and you should be wary of anyone who promises otherwise.
What the day looks like
From Samui it's an early start: ferry across to Donsak, a short drive down the coast, then out on a local boat with skippers who have watched these animals for years. Engines drop to idle and you scan the water for the pale arc of a surfacing back, the wait is rarely long. Afterwards, Khanom keeps giving: a proper Thai seafood lunch, a swim off a beach you may have entirely to yourselves, and a coastline of green hills that feels a world away from the island buzz. You're back on Samui for the evening.
Watching them responsibly
- Distance is the deal. Good boats hold back and never chase - the dolphins choose how close to come, and they often choose very close.
- No swimming with them, no feeding. This population thrives because it's left to live normally. That's the whole point.
- Mornings, small groups. Calmer seas, softer light, less pressure on the animals, and better photos for you.
Practical details
- Full day from Koh Samui, from ฿2,850 - our Pink Dolphins of Khanom tour covers hotel pickup, ferry, transport, the boat, lunch and a guide.
- Bring: hat, sunscreen, and a camera with some zoom, the dolphins surface where they please.
- Great with children. The bay is flat calm and the boat time is short, one of the easiest wildlife days for families (see our family guide).
Photographing the pink dolphins
Everyone wants the picture that proves it. Dolphins don't pose, though, and a surfacing back is above water for a second or two at most, so a little preparation makes all the difference.
- Watch the water, not the screen. Look for a ripple, a patch of oddly smooth water or birds working over the sea. Dolphins often surface again close to where they last appeared, a few seconds later.
- Use burst mode. On a phone, hold the shutter down; on a camera, switch to continuous shooting. Out of twenty frames, one will catch the arc at its highest.
- Freeze the motion. If your camera lets you choose, pick a fast shutter speed. Calm, bright mornings give you plenty of light to work with.
- Don't over-zoom a phone. Digital zoom beyond the lens's own range turns pink into pixels. Shoot a little wider and crop afterwards.
- Video can beat stills. A steady clip of the water around the boat catches the moment you would have missed, and you can pull a frame from it later.
- Polarised sunglasses help. They cut the glare and let you spot pale shapes just under the surface before they break it.
- Stay seated and still. Everyone rushing to one side rocks the boat, spoils each other's shots and does nothing for the animals.
And then, at some point, lower the camera. The colour is softer and stranger to the naked eye than on any screen, and the people who enjoy this day most are the ones who watched as much as they filmed. The full list of what the day includes is on the tour page.
A few Thai words for Khanom
Khanom sees far fewer foreign visitors than Samui, and English is less common at the harbour and in the village restaurants. A handful of words goes a long way, and people are visibly pleased when you try. Men end polite phrases with khrap, women with kha.
- Sawasdee khrap / kha: hello, and also goodbye.
- Khop khun khrap / kha: thank you. Say it to your skipper at the end of the trip.
- Lo-ma: dolphin. Lo-ma see chompoo is the pink dolphin, the phrase you are likely to hear on the boat.
- Talay: sea.
- Pla, goong, pla muek, hoy: fish, prawn, squid, shellfish. The vocabulary of the seafood lunch.
- Mai phet: not spicy. Phet nit noi means a little spicy, which in a southern Thai kitchen can still be quite a lot.
- Aroi: delicious. Said at the end of the meal, it is the nicest compliment you can pay a cook.
- Mai pen rai: never mind, no problem. The phrase that sums up the pace of Khanom.
Southern Thai cooking has a reputation for heat, so mai phet is worth remembering if you are travelling with children. Pronunciation will not be perfect, and nobody expects it to be: the effort is what counts. For more on what to order once you are back on the island, our guide to Samui's night markets picks up where this leaves off.
The bottom line
Ang Thong gets the postcards and Koh Tao gets the snorkel photos, Khanom gets the story nobody back home believes until you show them. If you have one flexible day and any love of wildlife, this is the trip we'd tell a friend not to miss.