Some 18km to the east of Sihanoukville, Ream National Park (also known as the Preah Sihanouk National Park) is unique in Cambodia, covering 210 square kilometres of both terrestrial and marine habitat, including stunning coastal scenery, mangrove swamps, lowland evergreen forest and the islands of Koh Thmei and Koh Ses. At least 155 species of bird have been recorded in the park, and for resident and visiting waders, the mangrove-lined Prek Toeuk Sap River is an important habitat. Besides supporting a large population of fishing eagles, the river is also home to milky and adjutant storks, and kingfishers, which are regularly spotted on the river trips – and dolphins often put in an appearance between December and April. The list of mammals includes deer, wild pig and fishing cats, though these are all elusive and you’re more likely to see monkeys.

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