Bai Tu Long Bay is a

bay A bay is a recessed, coastal body of water that directly connects to a larger main body of water, such as an ocean, a lake, or another bay. A large bay is usually called a ''gulf'', ''sea'', ''sound'', or ''bight''. A ''cove'' is a small, ci ...

in Vietnam. It encompasses Bái Tử Long National Park. Bai Tu Long Bay is northeast of

Hạ Long Bay Hạ Long Bay or Halong Bay (, ) is a UNESCO World Heritage Site and popular travel destination in Quảng Ninh province, Vietnam. The name Hạ Long means "descending dragon". Administratively, the bay belongs to Hạ Long city, Cẩm Phả c ...

References

Bays of Vietnam Geography of Quảng Ninh province Gulf of Tonkin {{Vietnam-stub