Stone, derrick 



Stone heavy enough to require mechanical means of handling individual 

 pieces, generally 1 ton (C.?l metric ton) and over. 



Storm tide 



Rise above normal water level on open coast due to action of wind stress 

 on water surface. 



Structure support 



Pilings or other structures with principal function being the support 

 of a structure which extends over the water. 



Substrate 



Solid material upon which an organism lives or to which it is attached. 



Succession 



Sequence of communities which replace one another in a given area. 



Taxon (pi taxa) 



Any taxonomic unit or category of organism; e.g., species, genus, family, 

 order, etc. 



Terrestrial 



Growing or living on or peculiar to the land, as opposed to the aquatic 

 environment. 



Terrigenous 



Relating to oceanic sediment derived directly from destruction of rocks 

 on earth's surface. 



Tetrapod 



A type of precast concrete armor unit with four legs used for facing 

 rubble-mound structures. 



Tidal datum 



Plane or level to which elevations or tide heights are referenced. 

 These wary for different coastal regions. 



Tidal flat 



The sea bottom, usually wide, flat, muddy, and unvegetated which is 

 exposed at low tide; marshy or muddy area that is covered and uncovered 

 by the rise and fall of the tide. 



Tide gate 



An opening through which water may flow freely when the tide or water 

 level is low or high but which will be closed to prevent water from 

 flowing in the other direction when the water level changes. 



Toe, bulkhead 



The base of a bulkhead, the lowest part. 



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