10 of The Brilliant Underwater Structures

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9. Hydrolab

Hydrolab

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Hydrolab was conceived by the national oceanographic and atmospheric administration (NOAA). As a research base for scientific study of the Atlantic ocean. The structure was located off of the Virgin Islands about 131 feet deep underwater on the ocean floor. It was a small space about 16 feet long and about 8 feet tall with running water, bunks, and viewpoints to observe the ocean. Hydrolab eventually closed in 1986 and now resides at the museum of natural history.