Spend a full day exploring two of Thailand's best snorkeling islands on this Koh Tao and Koh Nang Yuan day trip. Travel by speedboat across the Gulf of Thailand, swim over colorful coral reefs around Koh Tao and relax on the iconic three-sandbar beach of Koh Nang Yuan with the option to hike to its postcard-perfect viewpoint.

This tour is ideal for guests who want a mix of underwater time and classic island scenery in one day. Early start at the pier for check-in, light breakfast and safety briefing before boarding the speedboat. Around 90 minutes crossing time to the first island in normal sea conditions.

Free time on Koh Nang Yuan to relax on the sandbar beach, swim in shallow water and hike around 15 minutes up to the famous viewpoint (trail is steep in parts, with steps and rocks). Snorkeling sessions at Koh Tao reef spots with colorful coral and tropical fish. Thai lunch at a restaurant on Koh Tao before the return crossing to Koh Samui. Drop-off at your hotel typically in the early evening.