A surface marker buoy, SMB or simply a blob is a buoy used by scuba divers, with a line, to indicate the diver's position to their surface safety boat while the diver is underwater.
Read more about Surface Marker Buoy: Standard Buoy, Decompression Buoy, Safety Sausage
Famous quotes containing the words surface and/or marker:
“A society which allows an abominable event to burgeon from its dungheap and grow on its surface is like a man who lets a fly crawl unheeded across his face or saliva dribble unstemmed from his mouth—either epileptic or dead.”
—Jean Baudrillard (b. 1929)
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