About this tour
When Noah from our team headed out on the 100 Degrees East Marine Team's snorkelling tour from Koh Samui to Koh Tao, we found it a solid way to see coral reefs without fighting crowds. The boat caps at 12 adults (or 14 with kids aged 4–12), with a crew of five-plus, so it stays intimate. Three snorkelling sites over an 8-hour day, guides who know the reefs, and a relaxed pace meant we actually spent time in the water rather than rushing between spots. It's the kind of tour where you're not jammed in with 40 other tourists.
Highlights
- Small-group cap keeps the reef calm and spotting-friendly
- Three separate snorkel sites across the day
- Crew of 5+ means attentive guides and smooth logistics
- Lunch, gear, and transfers all bundled in
- Full insurance included — one less admin headache
- On-board facilities and fresh fruit breaks
What to expect
Noah and our team boarded early and made the crossing to Koh Tao at a sensible pace — no white-knuckle speed boat nonsense. The first two snorkel spots gave us time to settle into the rhythm of the reef; guides pointed out fish and coral formations without being pushy. Lunch was a proper sit-down affair on deck, and the crew kept cold drinks flowing. By the third site in the afternoon, we'd built real comfort in the water. The whole vibe felt unhurried rather than a tick-box dash.
Water clarity and marine life depend on season and conditions, so don't expect documentary-quality visibility every time. The boat itself is well-run but functional — not a luxury vessel. Group size meant we could ask guides questions without yelling over 50 other people, which made a genuine difference to what we learned about the reefs we were swimming through.
What travellers say
- Crew of 5+ ensures attentive guide-to-guest ratios
- Three reef sites in a single day
- Insurance, lunch, and transfers remove hidden costs
- Small group size keeps the reef experience genuine
- Relaxed pacing maximises actual snorkel time
- Not suitable for spinal injuries, pregnancy, or cardiac concerns
- Requires moderate-to-good fitness level
- Group bookings of 5+ require direct contact
- Tour cancels if minimums aren't met by 4 p.m. prior day
Themes summarised by our team from public information about this tour. Verify specifics on the operator's page before booking.
Good to know
If you want snorkelling without the cattle-market feel, this sits well above the bigger tour-boat operations. Small groups mean your guide actually spots things with you, and the inclusion of transfers, lunch, and full insurance keeps surprises off the bill. Suits moderate swimmers and families with primary-school-age kids.
You'll need decent fitness — this is eight hours on water with active snorkelling, not a leisure float. Not suitable if you have spinal issues, are pregnant, or have heart concerns. The boat doesn't operate if numbers drop below minimum, so you'll get a call by 4 p.m. the day before if it's off (though you can shift to another date). For groups of five or more, you must book direct to guarantee you're all on the same boat — separate bookings won't necessarily join up.
Bring a light jacket or wetsuit layer (depending on season — Thai sea temps vary). Sunscreen is essential. The tour handles snorkel gear, life jackets, and onboard restroom. Peak times are May–October; March–April can be warm and busy.
Tour sold and operated by Viator via Viator. Descriptions on this page are original BugBitten summaries written by our team — not copied from the operator. Prices and availability are confirmed at checkout.