Habitat 



Interacting physical and biological factors which provide at least minimal 

 conditions for one organism to live or for a group of organisms to occur 

 together. 



Habitat type 



All the area that presently supports a community or organisms. 



Harbor 



Any protected water area affording place of safety for vessels; for the 

 purposes of this study, includes boat basins, marinas, and moorage. 



Headland 



High steep-faced promontory extending into sea. 



Herb 



Seed-producing vascular plant that produces no woody tissue and dies back 

 at end of growing season. 



Hook 



Spit or narrow cape of sand or gravel which turns landward at outer end. 



Impact 



An action producing a significant causal effect or the whole or part of a 

 given phenomenon. 



Impermeable groin 



Groin through which sand cannot pass; see groin. 



Individual lot pier 



One-owner pier usually serving single property. 



Inlet 



Water passage to an inland water; or a recess in the shore such as a bay. 



Internation Great Lakes tidal datum (IGLD) 

 See tidal datum. 



Invertebrate 



Animal lacking an internal skeletal structure, e.g., insects, mollusks, 

 crayfish, etc. 



Isthmus 



Narrow strip of land, bordered on both sides by water, connecting two 

 larger bodies of land. 



Jet 



To place in ground by means of jet of water acting at lower end. 



Jetty 



Structure extending into body of water designed to prevent shoaling of 

 channel by littoral materials and to direct or confine stream or tidal 



flow; See breakwater. 



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