Although clearly inside the protected area of Ream National Park,[2] a number of development companies have obtained long lasting land-lease concessions since 2010.

In early 2018, development hastened on the island, partly prompted by the launch of the Golden Silver Gulf Tourism Zone project, which encompasses Koh Thmei.

Still, due to the unspoiled, pristine state, dense, lush and primeval vegetation, its general remoteness and very sparse population, Koh Thmei is considered one of the most ecologically esteemed Cambodian islands among its visitors.

150, dated November 2, 2018, more than two thousand hectares of land on Koh Thmei were earmarked as development zones for tourist, entertainment and recreational centres.

HTTH Island Investment Co. and Celestial Stars Limited, a casino and lottery company, would develop the areas to tap into the growth of coastal tourism in Cambodia.

[10] While Koh Thmei is part of, constitutes and contributes to the local eco-system, literally all sources first highlight the exceptional high number of bird species on the island.

Hanuman travel: best for bird-watching - It’s a useful place to base yourself if you’re interested in sighting some of the island’s 155 bird species, including the endangered brahminy kite.