Ha Long – Cat Ba heritage management needs reformVietNamNet Bridge - Vietnam is making hectic preparations to submit an application for UNESCO recognition of Ha Long Bay – Cat Ba Archipelago as an expanded World Heritage Site. The Ha Long - Cat Ba heritage management needs reformCat Ba is one of the world’s natural biosphere reserves. And now Vietnam is seeking UNESCO’s recognition of Ha Long – Cat Ba as it believes this will ensure the integrity of biodiversity in the area. ChallengesTreating waste water is an important issue that Ha Long – Cat Ba will have to face. Under the Ha Long Bay Management Board, differences in the requirements about ship age are registered in Ha Long and Cat Ba.