Unusually shallow reefs, a palette of awesomely clear turquoise waters and dazzling white sands, and dense forests of lofty dipterocarps combine to make the islands of Ko Surin one of the most popular destinations in south Thailand. However, Ko Surin’s most famous feature, its spectacular and diverse coral lying in fields just below the surface at the perfect depth for snorkelling, was severely bleached by a sudden rise in sea temperature in early 2010. Four of the most popular reefs are now closed to visitors, though half a dozen other sites that were less severely affected by the bleaching remain open; the national park is still a good spot for snorkellers, with plenty of fish to see, but it will take many years for the reefs to recover.

Ko Surin is very much an outdoors experience, with the bulk of accommodation in national park tents, no commerce on the islands at all, and twice-daily snorkelling the main activity. Several tour operators run snorkelling day-trips from Khuraburi, and there are diving trips too, most of which also take in nearby Richelieu Rock, considered to be Thailand’s top dive site (see Diving and snorkelling off Phuket), but independent travel is also recommended. Because the islands are so far out at sea, Ko Surin is closed to visitors from roughly May to October, when monsoon weather renders the 60km trip a potentially suicidal undertaking.

Travel offers; book through Rough Guides

Thailand features

The latest articles, galleries, quizzes and videos.

Video: a 1 minute guide to Thailand

Video: a 1 minute guide to Thailand

Consistently voted as one of the best places to travel by our readers – most recently as one of the world's friendliest countries and one of the best place…

05 Dec 2016 • Rough Guides Editors videocam Video
The truth about elephant tourism in Asia

The truth about elephant tourism in Asia

Elephants are born free, but are everywhere in chains – and it’s tourism which is increasingly to blame. Riding an elephant used to be on every visitor’s …

25 Nov 2016 • Gavin Thomas insert_drive_file Article
9 essential tips for backpacking Thailand

9 essential tips for backpacking Thailand

Backpacking Thailand can mean staying in fun-packed hostels and idyllic beach bungalows, eating noodles so tasty and so cheap you’ll swear off all other food …

11 Apr 2016 • Helen Ochyra insert_drive_file Article
View more featureschevron_right

Join over 60,000 subscribers and get travel tips, competitions and more every month

Join over 60,000 subscribers and get travel tips, competitions and more every month