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 | marine GIS, GIS and oceanography (4)  | Marine habitat mapping (1)  | marine mammal tracking, Arc Marine (1)  |  
 | Marine mammals (2)  | marine management (1)  | Marine Map, MarineMap, MPA, marine spatial planning, MMS, GIS and oceanography, conservation (1)  |  
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 | marine spatial planning (7)  | maritime boundaries, GIS and oceanography (1)  | Maritime spatial planning (1)  |  
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 | Mesotech, Imagenex, Alvin, Floc, Flow, CoAxial, Cleft, seafloor mapping, bathymetry (1)  | message passing (1)  | message-passing interface (1)  |  
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 | multiscale analysis (1)  |  |  |