Explanation:

Hydrothermal vents are globally distributed, but their location is determined by tectonic conditions where sea water meets magma.
• Where plates form, such as mid-oceanic ridges and in areas where there is volcanic activity, the Earth’s magma is close to the seafloor and can heat water which has seeped down.
• The hydrothermal vents are therefore associated with regions of high tectonic activity and intersections of continental plates