Ha Long Bay Facts

There are around 1,600 limestone islands and islets that makeup Ha long Bay. It is an area of extraordinary natural beauty. It is located in Vietnam’s Quang Ninh province, very close to the Chinese border. In 1994, it was recognized as a World Heritage Site by UNESCO. The bay extends 74 miles along the coastline.

Most of the islands and islets in Ha long Bay are limestone. An islet can be defined as a small island. They have secluded caves, grottoes and beaches within them. This limestone has been forming for more than 500 million years approximately.


Quick Facts: –

  • The weather in Ha long Bay is typical for a tropical coastal climate. During the year, there are mainly two seasons.
  • The first season that starts in April and ends in September has a hot and humid weather.
  • The second season starts from October and ends in March featuring cooler weather.
  • The bay has the typical diurnal tide system. The tide amplitude can range from 3.5 to 4 m.
  • The Ministry of Culture, Sports and Tourism of Vietnam listed Ha long Bay in the National Relics and Landscapes publication in 1962.
  • In 2012, it was classified as one of the New Seven Wonders of Nature.
  • In this region, there are 60 widespread faunal and 14 widespread floral species.
  • It is the home to approximately 507 species of plants, 200 fish, more than 200 corals, numerous mollusks, 71 birds and 45 reptiles.
  • The bay is not deep. It has a depth of only 33 feet.
  • There are some archaeological evidences that suggest humans may have inhabited the area in and around the bay for as long as 18,000 years.