Mole 



Massive land-connected, solid-fill structure of earth (generally revetted) 

 masonry or large stone; see jetty. 



Monolithic 



Type of construction in which structure's component parts are bound to- 

 gether to act as one. 



Moorage 



Place to make a vessel fast with anchors, cables, etc.; see harbor. 



Mud 



Fluid-to-plastic mixture of finely divided particles of solid material 

 and water. 



Mud flats 



Low, unvegetated mud substrate that is flooded at high tide and uncovered 

 at low tide. 



Neap tide 



Tide occurring near time of quadrature of moon with sun, usually with 

 range 10% to 30% less than mean tidal range. 



Nekton 



Macroscopic organisms swimming actively in water; e.g., fish. 



Neritic zone 



Relatively shallow water zone which extends from the high-tide mark to 

 edge of continental shelf. 



Westing 



Pertaining to brooding eggs or rearing young. 



Nourishment 



Process of replenishing a beach; naturally by longshore transport or 

 artificially by deposition of dredged material. 



Nursery 



Area where young are born or cared for. 



Nutrients 



Elements or compounds essential as raw material for organism growth and 

 development; e.g., carbon, phosphorous, oxygen, nitrogen. 



Outfall 



Structure extending into a body of water for the purpose of discharging 

 an effluent (sewage, storm runoff, cooling water). 



Parapet 



Low wall built along edge of a structure. 



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