Beebe Hydrothermal Vent Field
The Beebe Hydrothermal Vent Field (abbreviated BVF, also known as the Piccard Vent Field) is the world's deepest known hydrothermal vent site and is located just south of Grand Cayman in the Caribbean, on the north side of the Mid-Cayman Spreading Centre in the Cayman Trough. Approximately 24 kilometres (15 mi) south of Beebe is the Von Damm Vent Field.
Source: Wikipedia — Beebe Hydrothermal Vent Field (CC BY-SA 4.0)