When you imagine some of the best beaches in the world, you're probably thinking of one of the best beaches in Southeast Asia. In this corner of the world, islands and coastlines straddle the seas between the Pacific and Indian Oceans, offering diverse types of waterfront landscapes that offer plenty of chances for the likes of surfing and scuba diving. But common to many among these fine coastal stretches are the azure skies, deep blue waters, and swaying palm trees that we dream of when we think of a sunny and sandy paradise. First, a quick lesson for the uninitiated. Southeast Asia is made up of 11 countries include Thailand, Vietnam, Cambodia, Laos, Malaysia, and Myanmar, which make up mainland Southeast Asia—as in, they’re connected by land to the Asian continent; as well as the Philippines, Singapore, Indonesia, Brunei, and Timor-Leste, which make up the archipelagic maritime states of the region.…