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 | Land use (1)  | land-use modelling (1)  | Landform classification (1)  |  
 | large digital databases, seabird monitoring, public internet, WWW, download marine environmental information system, Northwest Atlantic, GIS and oceanography, Coastal Atlas (1)  | large marine ecosystem, LME (1)  | lasers (1)  |  
 | latitude (1)  | Lau Basin. seafloor classification, rugosity, seafloor roughness, TIN, GIS and oceanography (1)  | lava domes (1)  |  
 | Lava morphology (1)  | Levenberg-Marquardt method (1)  | LiDAR (4)  |  
 | LIDAR, GIS and oceanography (1)  | like GeoMapApp and GMT (1)  | Limits of oceans and seas,IHO S-23,Global Self-consistent,Hierarchical,High-resolution Shoreline (GSHHS),geographic information system (GIS),vector map (1)  |  
 | Linkages (1)  | LIPs, large igneous provinces, hot spots, seafloor topography, seafloor mapping, swell, super-swell, seamounts, depth-age relation, lithosphere, Pacific Plate (1)  | local ontology (1)  |  
 | Long Island Sound, mapping, prioritization, seafloor, spatial (1)  |  |  |