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If you're eager to explore the underwater world, head to Coral Island, also known as Koh Hae. It's famous for its vibrant coral reefs and diverse marine species, making it a great spot for snorkeling.
• Another fantastic location is the Similan Islands, which are a bit further out but well worth the trip. The clear waters and rich marine biodiversity here are among a strong option in Thailand.
• Don't forget about the Racha Islands, where you can find beautiful beaches and excellent snorkeling conditions. Tours are available from Phuket, making it easy to plan a day trip.
Check age, height, fitness and supervision requirements before paying. Build in shade, water and rest time, and avoid overloading a family day with long cross-island transfers.