Of the 99 tiny tropical islands off the northwestern coast of peninsular Malaysia collectively known as Langkawi, only four are inhabited. The largest, Pulau Langkawi, is fringed with dozens of beaches, all of which are open to the public and blessed with soft sands and warm (jellyfish-free!) waters. Snorkelers will revel in the underwater pageants of nearby Pulau Payar's coral reefs. Spelunkers and other brave souls with no fear of the dark (or worse--bats) can behold the stalagmites and stalactites that adorn Langkawi's network of caves, which were once favorite stashing spots for pirate booty.