Set out across the Andaman Sea for a day-long tour of Krabi’s "4 Islands," and watch the tide uncover the slender spits that join the jungle isles. Explore the coastline by traditional longtail boat/or speed boat and leave the day’s first footprints on fine, powdery beaches. Snorkel in a sheltered lagoon, linger in the swaying shade of coconut palms, and enjoy a picnic lunch on a pristine beach. Stroll between Tup Islets and Chicken Island, then cast off again toward fantastical rock formations that soar above the tropical sea.