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This map shows only some of the vent sites that are known to exist, and scientists believe there are thousands more that have yet to be discovered.
Discoveries in the Abyss | Deep Sea Machines | Vents of the World
Map: World Ocean Floor by Bruce C. Heezen and Marie Tharp ©1977 Marie Tharp. Reproduced by permission of Marie Tharp, 1 Washington Ave, South Nyack, NY 10960
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© | Updated October 2000