One of the most popular destinations in Halong Bay is Cat Ba Island, where several floating villages, hotels, restaurants, and bars are set against a backdrop of lush mountains, karst caves, white sandy beaches, coral reefs, lagoons and mangroves. It’s also home to endangered wildlife such as Cat Ba langurs, southern serows, rhesus macaque, leopard cats, black giant squirrels, and civet cats.
Dau Be Island: Another Halong Bay island is Dau Be Island, a prominent swimming and diving spot with a rich coral system and deep grottoes that houses six inland lakes. Located 28 kilometres from Bai Chay Port, the grottoes and caves can only be visited by rowing boat at low tide, when access is possible. You can also spot golden monkeys, and flying squirrels while you’re here.