Ream National Park

"To explore this national park, visitors travel on foot and by boat along estuaries through thick mangrove forests and over plank bridges in dense stretches of jungle. The park’s freshwater wetlands and evergreen forests provide a healthy habitat for hundreds of species of animals, but there are pristine beaches here, too."

Why you should stay in Sihanoukville before hopping to the Cambodian islands - SilverKris

"A coastal national park 15 km from town featuring mangrove swamps, coral reefs, white-sand beaches and abundant birdlife; visitors can take boat tours or guided ranger walks through coastal rainforest and may spot bottle-nosed dolphins off the coast, making it the top natural escape near Sihanoukville." - SilverKris

Why Cambodia’s islands are the hottest beach destination right now - SilverKris

"The local national park office where guided treks to the nearby wildlife-rich island are booked (contact provided in source text), and the logical starting point for arranging visits that include trekking and wildlife spotting across the park’s peaks, creeks and estuaries." - SilverKris