H2O Original is a PADI 5-Star dive centre based at Thong Nai Pan on Koh Phangan, Thailand. The boutique dive company operates the island's only speedboat service, providing faster access to dive sites in the Gulf of Thailand. Services include PADI courses from beginner to professional level, fun dives for certified divers across a range of marine life sites, and snorkelling tours and national park trips. The centre has been operating since the early days of Thong Nai Pan.