Koh Tao & Koh Nang Yuan Snorkeling Tour by Speed Boat from Samui

The 08:30 departure from Koh Samui runs on a shared speedboat, crossing the Gulf to Koh Tao and Koh Nang Yuan in time for a full day of snorkeling before the 16:30 return. A light breakfast and refreshments are served at the pier before boarding, and the English-speaking guide covers the day’s stops on the way over. Guiding runs in Thai and English, and the booking carries instant confirmation with free cancellation up to 24 hours out.

Koh Nang Yuan is first: roughly two hours split between snorkeling the reef around its three connected islets and climbing to the viewpoint above them. It’s a private island, so the 250 THB adult / 125 THB child entrance fee (ages 4-9, up to 120cm) is paid separately and isn’t part of the tour price. A Thai buffet lunch follows at a beach restaurant, then the boat continues to Hin Wong Bay and Mango Bay for two more 40-minute snorkel stops — reef fish and sponges at Hin Wong, staghorn coral at Mango Bay — though the Hin Wong stop can be skipped in certain seasons.

Snorkel gear, a life jacket, and a first-aid kit are provided, and the hotel or villa transfer runs both ways in a shared, air-conditioned car. Group size caps at 15 across four separate snorkel-and-swim sessions spread through the day, from the Nang Yuan reef in the morning to Mango Bay in the afternoon. At 4.5 from 135 reviews, it’s a straightforward format: breakfast, one big snorkel-and-hike stop, lunch, two more bays, done by mid-afternoon back on Samui.

Insider Tip: Nang Yuan’s entrance fee is cash-only and not included in the tour price — bring small notes, since change can be slow at the gate on a busy boat day.