Autonomous reef monitoring structures or ARMS are used by scientists to study biodiversity on coral reefs. These three-dimensional structures are deployed on a reef for two years to allow organisms to colonize them. ARMS being recovered by a submersible at 91 meters (300 feet) depth.
ARMS Deployment
Image courtesy of the Smithsonian DROP Program and Substation Curaçao crew.. Download larger version (jpg, 979 KB).

Autonomous reef monitoring structures or ARMS are used by scientists to study biodiversity on coral reefs. These three-dimensional structures are deployed on a reef for two years to allow organisms to colonize them. ARMS being recovered by a submersible at 91 meters (300 feet) depth.

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