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Blue Holes Project.

Photographs published by 'National Geographic' August 2010

Submerged caves found both on land and in the sea are among the least studied and most threatened habitats on Earth. These systems, which hold the drinking water for many of the world’s inhabitants and influence the health of nearby marine ecosystems, also boast a unique biodiversity of microbial and multicellular life /.../

Blue Holes ProjectRead about the Blue Holes Project on National Geographic, Submerged Caves - photo by AM .
Visit Photo Gallery View Deep Dark Secrets Photo Gallery, Brian Kakuk in Ralph's Cave on Abaco - photo by AM.
Wall Paper Click here to download the wallpaper photo from Deep Dark Secrets  Photo Gallery.