Sea Abbreviations and Acronyms
- MCBIMarine Conservation Biology Institute
- MCCIPMarine Climate Change Impacts Partnership
- MCDMarine Cadet Detachments
- MCPMarine Care Program
- MCRMid-Cayman Rise
- MDSUMobile Diving Salvage Unit
- MEMarine Ecosyutems
- MEMLSMicrowave Emission Model of Layered Snowtacks
- MFSMediterranean Forecasting System
- MFSTEPMediterranean Forecasting System Toward Environmental Predictions
- MGMenez Gwen
- MHMultimission Helicopter
- MHHWMean Higher-High Water
- MHHWMean Highest High Water
- MHLWMean Higher Low Water
- MHWNMean High Water Neaps
- MICMaritime Information Centre
- MLDSMixed Layer Depths
- MLHWMehn Lower High Water
- MLRMarine Living Resources
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