Koh Tao Day Trip from Koh Samui 2026: Complete Snorkeling & Diving Guide Koh Tao transforms casual beachgoers into certified scuba divers through world-renowned PADI courses costing ฿9,500-12,000 ($285-360) while offering day-trippers from Koh Samui spectacular snorkeling around Koh Nang Yuan’s triple-island sandbar, encounters with sea turtles and blacktip reef […]