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CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation of U.S. patent application Ser. No. 12/804,482, filed Jul. 22, 2010, and issued on Nov. 3, 2015 as U.S. Pat. No. 9,175,488, which is incorporated by reference herein, in the entirety and for all purposes. 
    
    
     FIELD OF INVENTION 
     The present invention relates to artificial water wave generation in natural and man-made bodies of water for surfing. 
     BACKGROUND 
     Water waves occur in natural and artificial bathymetry. Wind, water current, and topographical features each and in combination thereof can cause the generation of waves. Relying on naturally occurring conditions and limitations in geographic location can greatly diminish availability, predictability, frequency and quality of waves sought in the art and sport of surfing. Attempts have been made to enhance wave size, shape and direction of peel to best meet the demands of the surfer. Artificial reefs have been successfully constructed thereby enhancing the waves generated by wind, topographic features and bathymetry. Such reefs are constructed using mathematical models under conditions of several variables, and consequently upon full-scale construction do not perform exactly as intended. Scale working models are utilized in testing reef size and configuration with promising results. However, when full-scale inventions are constructed at extensive cost, the performance is less than expected because of dynamic inconsistencies in the physics of bringing models to full-scale size. Most man-made reefs and all natural reefs are static and thereby exist in specific configuration resulting in drastically limited variation in wave generation. Rigid reef inventions that provide for variation in orientation and alignment with respect to a pool bed provide some variation in wave type, however they do not provide more than one direction of peel, they do not provide variation in the rate of peel of waves generated, nor do they provide for a near infinite combination or plurality of simultaneous waves. 
     In other prior art wave forming devices, attempts have been made to enhance wave size, wave shape, wave duration, and wave direction of peel by placing an adjustable weir onto the bed of the body of water, normal to the direction of flow. The specific incline to the weir and decline to the bed is basically a reef. The elevation of the weir with respect to the elevation of the bed is varied by means of hydraulic piston cylinders, pivot points or combination of both. 
     Other wave enhancing devices include rigid reef configurations that are suspended above the bed of the body of water at predetermined distances and predetermined angle of inclination with respect to the direction of water flow, thereby attempting to establish adjustment of the reef in juxtaposition to the bed, water flow, and water depth. Cables and or hydraulic pistons are interconnected, anchored onto the bed and onto the distal surface of the reef. 
     In other prior art wave forming devices, a wave is actually simulated in the water itself, rather than being defined by a surface over which a thin sheet of water flows. U.S. Pat. No. 6,019,547 of Hill, Feb. 1, 2000, describes a wave forming apparatus which attempts to simulate natural antidune formations in order to create waves. A water-shaping airfoil disposed within a flume containing a flow of water, and a wave-forming ramp is positioned downstream of the airfoil structure. 
     In other prior art arrangements, such as U.S. Pat. No. 6,928,670 B2 of Lochtefeld et al., Aug. 16, 2005, describes a moving reef wave generator that travels along the surface of a body of water, and preferably in the middle thereof, wherein the wave generator can create both primary and secondary wave that travel toward the shore. The primary waves are intended to allow surfing maneuvers to be performed in a relatively deep water environment. The secondary waves can break, wherein by modifying the shoreline&#39;s slope and curvature, and providing undulating peninsulas and cove areas, various multiple wave formations and effects can be created. 
     In the prior art of McFarland, U.S. Pat. No. 6,932,541 B2, Aug. 23, 2005, a plurality of a semi-rigid reef, referred to a weir, is interconnected in cantilever onto the bed of a pool of water at the upstream, leading end, having a predetermined abrupt incline and gentle downward slope at the downstream end. A secondary passageway extends through the bed form, with a first end adjacent the trailing end of the bed form, and a second end in the bed form upstream of the first end, thereby creating a pocket between the bed and underside of the hydraulic rams that independently control the lift of each cantilevered reef. A grating is provided between adjacent reefs to prevent inadvertent entry between the reefs and water return channels beneath. However, the grating provides the risk of collision with an occupant in the event of a fall in riding a wave. Furthermore, although the invention provides for some variation in wave size, it does not provide for variation in wave peel direction, wave type, wave size, or wave orientation. The flow of water current between wave cycles could create serious rip tides between and beneath the suspended reefs. 
     In the prior art of Hill, U.S. Pat. No. 6,019,547, Feb. 1, 2000, an airfoil chute or pool and an aerofoil structure shapes the flow of water generated by the chute and variable ramp. Although there is some variation in wave shape of the surfable wave, the rigid surface of both airfoil and ramp limits the variation in reef configuration and thusly wave type, size, and peel. Furthermore, the suspended configuration of the airfoil presents a safety hazard, causing an occupant to become lodged between the airfoil and pool bed. 
     In U.S. Pat. No. 6,928,670 B2 of Lochtefeld et al., Aug. 16, 2005, the moving reef traverses along the length of a pool near the surface of the water, pulled along a track fastened onto a pool bed. This moving device can be inadvertently impacted by the surfer resulting in serious injury. Even though the device moves, the rigid configuration greatly reduces the variation of wave generation types and direction of wave peel. To enhance wave size, the device must move at a greater rate of speed, thereby increasing the risk of bodily injury if impacted by the surfer. The mechanical means of connecting the moving reef device to the track system creates further risk of injury at the juncture of the moving reef&#39;s stem and tracking slot located between the track-mounted trolley and interconnecting moving reef. In testing a wave-generating invention at a scaled-down size, the outcome in full-scale engineering can result in failure. A full-scale production reef was constructed having a buoyant, rigid reef subtended by cables subtended from the distal face of the reef and anchored to a reinforced-concrete pool-bed. When tested, the wave energy generated an uplifting force sufficient enough to separate the attachment of the reef from the pool-bed, virtually pulling the anchored cables from the pool bed, causing millions of dollars in damage and severe delays in the project. 
     It is therefore an object of the invention to provide a variety of wave size. 
     It is another object of the invention to provide a variety in wave shape. 
     It is another object of the invention to provide a predetermined wave direction of peel. 
     It is another object of the invention to establish a predetermined rate of wave peel. 
     It is another object of the invention to reconfigure wave attributes of size, shape, and orientation in minimum time. 
     It is another object of the invention to program predetermined reef configurations thereby to program specific wave types. 
     It is another object of the invention to program predetermined reef configurations thereby to program specific wave direction of peel. 
     It is another object of the invention to program predetermined reef configurations thereby to program specific wave size. 
     It is another object of the invention to program predetermined reef configurations thereby to program specific wave duration. 
     It is another object of the invention to program predetermined reef configurations to generate more than one wave simultaneously. 
     It is another object of the invention to provide a reef that will respond to human impact if inadvertently struck, thereby reducing risk of bodily harm or injury. 
     It is another object of the invention to provide a chamber that will allow for water circulation of the pool. 
     It is another object of the invention to provide a chamber that will minimize down-time in repair or replacement of a defective module. 
     SUMMARY 
     In accordance with the present invention, there is provided a reef that is comprised of a plurality of a telescopic-module that is grouped in a plurality of interconnected clusters thereby establishing variations for the reef. As a means of establishing the domain of the plurality of the telescopic-module within the confines of a pool bed, a chamber is provided. The chamber is configured to a predetermined size, configuration, and depth below the elevation of the pool bed, thereby acting as a yoke to restrict lateral movement of the plurality of the telescopic-modules when acted upon by the kinetic-energy force of water passing above the entire domain. 
     The predetermined depth of the chamber is established so as to provide space in the vertically positioning of each the totality of the telescopic-module in a full-retracted posture with the proximal end of said telescopic-module within the same plane as the encompassing pool bed. Furthermore, the depth of the chamber is defined by the elevation of a chamber floor at a predetermined distance below the distal end of the plurality of the clusters so as to permit technicians to construct and maintain the individual modules from beneath the elevation of the pool bed, thereby omitting “down-time” in the event of repairs. 
     The domain of the telescopic-module provides a variety of reef shape, size, and orientation within the confines of the chamber, thereby providing a means of generating a variety of wave shape, size, orientation, direction of peel, and duration of peel. Each of the telescopic-modules is controlled independently so as to vary in height independently. When completely contracted, the telescopic-module height is aligned within the same plane as the circumventing pool bed thereby establishing a condition as if no reef exists. When a plurality of predetermined telescopic-module is selected and activated to “telescope” or extend upwardly, each at a progressive predetermined height, the telescopic-module group acts in totality to create a unique, predetermined reef thereto creating a specific wave generation. 
     Extension and retraction of each telescopic-module is accomplished, and controlled by a predetermined volume of water that is contained within a bellows interconnected within the confines of the telescopic-module. When the volume of water contained within the bellows is increased, the bellows elastically extends, thereby causing the telescoping-upper-body to elevate to a predetermined height above the plane of the encompassing pool bed. Conversely, when the volume of water contained within the bellows is depleted, the bellows elastically retracts, thereby causing the telescoping-upper-body to descend to a predetermined height above or at the plane of the encompassing pool bed. These variations in reef shape, size, and orientation provide for creating various wave types, size, direction of peel, duration of peel, single and multiple simultaneous wave generation. 
     In accordance with the direction of a kinetic-energy introduced to the water within the pool bed, a diagonal-left reef extends down-stream towards a beach traversing from right to left, thereby causing the kinetic-energy overpassing the diagonal-left-reef to generate a wave which will peel or break from right to left along a plateau of said diagonal-left-reef. Conversely, in accordance with the direction of the kinetic-energy introduced to the water within the pool bed, a diagonal-right-reef extends down-stream towards a beach traversing from the left to right, thereby causing the kinetic-energy overpassing the diagonal-right-reef-reef to generate the wave which will peel from left to right along the plateau of said diagonal-right-reef. 
     When a reef is configured in a vee shape with the vertex located at or near the centerline of the pool and upstream, convex to the direction of the kinetic-energy, the wave generated peels from the vertex in both directions along the plateau of the said vee-reef. The desired configuration, size, and orientation of any reef type is determined by means of testing at full-scale for the purpose of creating the optimum wave performance. Upon testing for each specific wave type, size, and orientation, the volume of water contained within each individual module is programmed into a computerized system for subsequent settings desired in reef shape, size, and orientation. 
     The cylindrical longitudinal shape of each set of three of the tangential adjoining telescopic-module provides a vertical equilateral concave triangular void. The void provides for circulation of water contained within the pool to pass downwardly through each of the void into the chamber and circulate from the chamber to a pumping filtration and purification system located outside the confines of the pool (not shown), thereto returning filtered and purified water to the pool (not shown). 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A complete understanding of the present invention may be obtained by reference to the accompanying drawings, when considered in conjunction with the subsequent, detailed description, in which: 
         FIG. 1  is a side view of a telescopic-module partially extended as shown by a displacement of a telescoping-upper-body; 
         FIG. 2  is a longitudinal cross sectional view of a telescopic-module in a full extended position; 
         FIG. 3  is a longitudinal cross sectional view of a cluster of the telescopic-module; 
         FIG. 4  is a top schematic view of a cluster of the telescopic-module showing the primary-module, and a plurality of the secondary-module; 
         FIG. 5  is a top schematic view of a cluster of the telescopic-module, and the cluster-perimeter of the plurality of the clusters interconnected; 
         FIG. 6A  is a plan view of a chamber of predetermined shape, size, and location within the pool bed; 
         FIG. 6B  is a plan view of a chamber showing within outline a predetermined vee-reef, a peel direction, and the kinetic-energy-direction; 
         FIG. 6C  is a plan view of a chamber showing within outline a predetermined diagonal-left-reef, the peel direction, and the kinetic-energy direction; 
         FIG. 6D  is a plan view of a chamber within outline a predetermined diagonal-right-reef, the peel direction, and the kinetic-energy direction; 
         FIG. 7  is a perspective view of a cluster of the telescopic-modules showing the primary-module, and the plurality of the secondary-modules; 
         FIG. 8  is a plan view of a chamber within the confines of the pool bed; 
         FIG. 9  is a perspective view of a chamber showing the predetermined diagonal-right-reef, the peel direction, and the kinetic-energy direction; and 
         FIG. 10  is a cross sectional view of a chamber within the confines of the pool bed. 
     
    
    
     For purposes of clarity and brevity, like elements and components will bear the same designations and numbering throughout the FIGURES. 
     DETAILED DESCRIPTION 
       FIG. 1  is a side view of a telescopic-module  10  partially extended. As shown by a displacement  68  of a telescoping-upper-body  12 , the telescopic-module  10  extension varies from a completely retracted-position  28  (shown in  FIG. 3 ) to a completely extended-position  30  (shown in  FIG. 2 ). Along a centerline  58 , the proximal end of the telescopic-module  10  is comprised of a hollow hemispherical dome  16  made of an elastomeric material such as silicone so as to enhance compressibility if inadvertently impacted by a swimmer or surfer. 
     Communicating with the dome  16  is the telescoping-upper-body  12 . Longitudinally inserted within the telescoping-upper-body  12  is a stationary-lower-body  14  of predetermined outside diameter so as to provide slidability of the telescoping-upper-body  12  without causing lateral or concentric misalignment. The stationary-lower-body  14  is circumferentially fitted with a collar  18  of outside diameter equal to the outside diameter of the telescoping-upper-body  12 . The collar  18  also provides for proper alignment of the adjoining stationary-lower-body  14 , thereby providing parallel alignment for slidability of the telescoping-upper-body  12 . The collar  18  provides an interface  78  at six circumferentially equidistant positions as generated by a geometric hexagonal matrix when the plurality of the telescopic-modules  10  is interconnected. Each interface  78  is comprised of a bore  80  at a predetermined location along the longitudinal axis of each of the collar  18  for the purpose of interconnecting the plurality of adjoining telescopic-modules  10  as shown in  FIG. 4  to create a hexagonal cluster  82 . 
       FIG. 2  is a longitudinal cross sectional view of the telescopic-module  10  in the full extended-position  30 . The dome  16  of the telescopic-module  10  is captured within the telescoping-upper-body  12  by means of a proximal-retainer  22 . The proximal-retainer  22  also serves to insertibly mate with the proximal neck  24  of a bellows  20 , which is secured onto the proximal-retainer  22  by means of a clamp  38 . The proximal-retainer  22  also provides for attachment of an air-bleeder-valve  54  for the purpose of removing air trapped from within the bellows  20  during the initial start-up of the invention or at time of repair. Air trapped within the bellows  20  is evacuated through an orifice  26  of the air-bleeder-valve  54  and is released into a cavity  50  of the dome  16  by means of a plurality of air-bleeder-ports  56  located through the horizontal surface of the proximal-retainer  22  within the confines of the dome  16  and at a predetermined location toward the proximal end of the telescoping-upper-body  12 . 
     Subsequent to bleeding, the cavity  50  within the hollow of the dome  16  will retain a volume of air. The cavity  50  of the dome  16  provides for collapse of the dome  16  upon inadvertent impact by a swimmer or surfer and memory of the elastic dome  16  will cause said dome  16  to return to a normal hemispherical shape. The air cavity  50  also provides for buoyancy, thereby reducing the “dead” load of the cluster  82  transmitted downwardly along the stationary-lower-body  14  of the primary-module  72  to the floor  46  of the chamber  42 . 
     An assembly comprising the dome  16 , the proximal-retainer  22 , the air-bleeder-valve  54 , the bellows  20 , and the clamp  38  is insertibly mated with the telescoping-upper-body  12  and mechanically secured by means of a plurality of the fasteners  40 . The assembly comprising the dome  16 , the proximal-retainer  22 , the air-bleeder-valve  54 , the bellows  20 , and the clamp  38  is insertibly mated within the stationary-lower-body  14  to a retracted-position  28  as shown in  FIG. 3 . 
     A distal-retainer  64  is provided to insertibly mate with the distal neck  24  of the bellows  20 , which is secured by means of a second clamp  38 . The distal-retainer  64  is comprised of a threaded-opening  66  of predetermined diameter to communicate with a threaded inlet-pipe  32 , thereto communicating with a union  34  fitting thereto communicating with a water supply-tube  36 . Another assembly comprising the distal-retainer  64 , the distal end of the bellows  20 , and the second clamp  38  is insertibly mated within the distal opening of the stationary-lower-body  14  and secured by means of a plurality of the fastener  40 ′. 
     Subsequent to the assembly comprising the distal-retainer  64 , the distal end of the bellows  20  and the second clamp  38 , the inlet-pipe  32  is threadibly inserted into the threaded opening of the distal-retainer  64 . The union  34  is then connected detachably onto the inlet-pipe  32  and the water supply-tube  36 . The supply-tube  36  attached to each of the telescopic-module  10  is sub-grouped and extended to a water volume control valve station (not shown) outside of the confines of the pool bed  124 . As a means of reducing the risk of sand or other such debris from collecting onto the horizontal surface of the distal-retainer  64 , within the assembly of the telescoping-lower-body and said distal-retainer  64 , a plurality of a weep-holes  62  is provided through said horizontal surface. 
       FIG. 3  is a longitudinal cross sectional view of the cluster  82  of the telescopic-modules  10 . The cluster  82  is comprised of the primary-module  72  and a plurality of the secondary-modules  76 . Centered within the cluster  82  of a plurality of predetermined telescopic-modules  10  is a primary-module  72 . Acting as a hub, the primary-module  72  is surrounded geometrically by a plurality of a secondary-modules  76 . 
     All of the telescopic-modules  10  are interconnected with a plurality of a fastener  40 ″ at each of the interface  78  locations. The fastener  40 ″ is introduced through the bore  80  located in the cylindrical wall  44  of the distal-retainer  64 , thereto communicating with the bore  80  located at the distal end of the stationary-lower-body  14 , thereto communicating with the bore  80  located in the collar  18 , passing through the bore  80  of the collar  18  of the adjoining telescopic-module  10 , and communicating with the bore  80  of the adjoining stationary-lower-body  14 , and communicating with the bore  80  of the cylindrical wall  44  of the adjoining distal-retainer  64 , thereby mechanically attaching the adjoining telescopic-module  10 . 
     The adjoining plurality of the cluster  82  of the telescopic-modules  10  creates a building-block for a reef-domain  86 . The cluster  82  provides for establishing a means for having said cluster  82  pre-fabricated to enable the reef-domain  86  assembly to be of less effort and improved efficiency. 
     The stationary-lower-body  14  of the primary-module  72  extends downwardly a substantial predetermined distance beyond the stationary-lower-body  14  of the plurality of the surrounding secondary-module  76  of the cluster  82  and communicates with a base  60  shown in  FIG. 3  which in turn is anchored onto a floor  46  of a chamber  42  by means of a plurality of the fasteners  41 , thereby establishing and acting as a column to support the weight and maintain position of each of the clusters  82  to resist hydrodynamic forces generated by kinetic-energy  52  in a wave  114  generation process. 
     The configuration shows an independent predetermined extension of each of the telescopic-modules  10  for the purpose of establishing a predetermined profile  70 . When all in the plurality of the cluster  82  are interconnected, the reef-domain  86 , first shown in  FIG. 6A , is established. When all of the telescopic-modules  10  are postured in the retracted-position  28  within the same plane as the pool bed  124 , essentially there is no reef. When a predetermined selection of the telescopic-module  10  is configured in the predetermined profile  70 , a specific shape, size, and oriented reef is established, thereto generating a conforming specific wave  114  when the water is acted upon by a kinetic-energy  52 . 
     The cluster  82  shows the interface  78  of interconnecting telescopic-module  10  to the adjoining telescopic-module  10  by means of the fastener  40 . The cluster  82  is structurally supported by the substantially longer collar  18  of the primary-module  72 , and is anchored to the floor  46  of the chamber  42  by means of the base  60  thereto attached to the chamber  42  floor  46  by means of a plurality of the fastener  41 . 
       FIG. 4  is a top schematic view of the cluster  82  of the telescopic-module  10  showing the primary-module  72 , and a plurality of the secondary-modules  76 . A cluster-perimeter  96  defines the general hexagonal geometric shape generated by a plurality of the encompassing secondary-modules  76 . A series of two encompassing rows of the telescopic-modules  10  are shown. However, the number of concentric rows can vary from a single encompassment to two or more, thereto increasing the number of the secondary-modules  76  required from six to eighteen respectively, and so forth. 
     Each of the tangential adjoining telescopic-modules  10  establishes the interface  78 . The area between each of the three adjoining telescopic-modules  10  creates an equilateral concave void  84 . The void  84  provides a conduit for water circulation from the pool (not shown) into the chamber  42 . Water is pumped from the chamber  42  to a purification and filtration system (not shown) outside the confines of the pool, and is thereto circulated back to the pool (not shown). Another purpose of the void  84  is to illuminate the water above the area of the reef from within the chamber  42  upwardly through the void  84  thereby creating a visual enhancement after dark. The illumination will also provide light necessary for repairs to the telescopic-module  10  from within the chamber  42 . 
       FIG. 5  is a top schematic view of the clusters  82  of the telescopic-modules  10 , and the cluster-perimeter  96  of the plurality of the clusters  82  interconnected. The interface  78  is the location for interconnection of each of the telescopic-module  10 , and the adjoining cluster  82  by means of a plurality of the fastener  41 . Juxtaposition of each of three of the tangentially adjoining telescopic-module  10  creates the void  84  which provides for water circulation from the pool (not shown) communicating with the chamber  42 , to a water filtration system (not shown) and is recirculated back to the pool (not shown). 
       FIG. 6A  is a plan view of the chamber  42  of predetermined shape, size, and location within the confines of the pool bed  124 . The geometric configuration of the chamber  42 , in lieu of a simple rectilinear perimeter, greatly reduces the number of the telescopic-modules  10  by omission of areas where the reef is not required, thereto providing a cost saving. The chamber  42  is comprised of a longitudinal axis-of-symmetry  126  parallel to a kinetic-energy  52  direction for providing a reciprocal of any configuration of the reef-domain  86 , thereto providing a reciprocal in the peel  118  direction of the wave  114  generated.  FIG. 6A  is oriented for clarity so as to provide interpretation of the reader of the invention as being the surfer moving in the direction of the kinetic-energy  52 . 
       FIG. 6B  is a plan view of the chamber  42  showing within outline a predetermined vee-reef  88 , a wave  114  peel  118  direction, and the kinetic-energy  52  direction. The vee-reef  88  is comprised of a proximal-slope  100 , a plateau  104 , and, a distal-slope  102 , given in the respective sequence to the kinetic-energy  52  direction. The vee-reef  88  generates a wave  114  with the peel  118  beginning at the axis-of-symmetry  126 , and a toe  98 , and moving outwardly, and equidistantly in both directions as shown. The telescopic-module  10  located in the area established between the chamber-perimeter  48 , and the vee-reef  88  are dormant, and remain in the full retracted-position  28 . 
       FIG. 6B  is oriented for clarity so as to provide interpretation of the reader of the invention as being the surfer moving in the direction of the kinetic-energy  52 . The shape of the vee-reef  88  is not necessarily limited to be confined within the outline of  FIG. 6B  as this outline merely provides for a general configuration of the vee-reef  88 , and the wave  114  generation option. 
       FIG. 6C  is a plan view of the chamber  42  showing within outline a predetermined diagonal-left-reef  90 , the peel  118  direction, and the kinetic-energy  52  direction. The diagonal-left-reef  90  is comprised of the proximal-slope  100 , the plateau  104 , and the distal-slope  102 , given in the respective sequence to the kinetic-energy  52  direction. The diagonal-left-reef  90  generates a wave  114  with the peel  118  beginning at the right or toe  98  showing the direction of the peel  118 . 
       FIG. 6C  is oriented for clarity so as to provide interpretation of the reader of the invention as being the surfer moving in the direction of the kinetic-energy  52 . The shape of the diagonal-left-reef  90  is not necessarily limited to be confined within the outline of  FIG. 6C  as this outline merely provides for a general configuration of the diagonal-left-reef  90 , and the wave  114  generation option. 
       FIG. 6D  is a plan view of the chamber  42  showing within outline a specific diagonal-right-reef  92 , the peel  118  direction, and the kinetic-energy  52  direction. The diagonal-right-reef  92  is comprised of the proximal-slope  100 , the plateau  104 , and the distal-slope  102 , given in the respective sequence to the kinetic-energy  52  direction. The diagonal-right-reef  92  generates a wave  114  with the peel  118  beginning at the left or toe  98  showing the direction of the peel  118 . 
       FIG. 6D  is oriented for clarity so as to provide interpretation of the reader of the invention as being the surfer moving in the direction of the kinetic-energy  52 . The shape of the diagonal-right-reef  92  is not necessarily limited to be confined within the outline of  FIG. 6D  as this outline merely provides for a general configuration of the diagonal-right-reef  92 , and the wave  114  generation option. 
       FIG. 7  is a perspective view of the cluster  82  of the telescopic-module  10  showing the primary-module  72 , and a plurality of the secondary-modules  76 . The collar  18  of the primary-module  72  extends downwardly communicating with the base  60  thereto communicating with the floor  46  of the chamber  42 . The base  60  is anchored onto the floor  46  by means of a plurality of the fasteners  41 , thereby preventing uplifting dynamic force caused by wave  114  generation across, and above the reef-domain  86 . 
     An access-opening  74  within the collar  18  of the primary-module  72  is provided in proximity to the distal-retainer  64  for the purpose of assembly, and attachment of the distal end of the bellows  20 , the distal-retainer  64 , an inlet-pipe  32 , a union  34 , and transmission of the supply-tube  36 . Each of the telescopic-modules  10  is operated independently for establishing variation in extension of said telescopic-module  10  thereto establishing variation in reef-domain  86 . The prefabrication of each of the clusters  82  enhances and simplifies the assembly process of the telescopic-modules  10  and attachment of the base  60  to the floor  46  of the chamber  42 . 
       FIG. 8  is a plan view of the chamber  42  within the confines of the pool bed  124 . One of the clusters  82  positioned within the dormant-reef  94  field is defined independently for clarity. The diagonal-right-reef  92  is comprised of a series of three distinct planes comprising the proximal-slope  100 , a plateau  104 , and a distal-slope  102 , given in the respective sequence to the kinetic-energy  52  direction. 
       FIG. 8  is oriented for clarity so as to provide interpretation of the reader of the invention as being the surfer moving in the direction of the kinetic-energy  52 . The shape of the diagonal-right-reef  92  is not necessarily limited to be confined within the outline of the diagonal-right-reef  92 , as this outline merely provides for a general configuration of the reef, and the wave  114  generation option. 
       FIG. 9  is a perspective view of the chamber  42  showing the predetermined diagonal-right-reef  92 , the peel  118  direction, and the kinetic-energy  52  direction. A length  106  of the diagonal-right-reef  92  is shown corresponding to a width  108  of the diagonal-right-reef  92 . A height  110  of the diagonal-right-reef  92  represents the plateau  104  of said diagonal-right-reef  92 . A dormant-reef  94  is shown outside the delineation of the diagonal-right-reef  92  which represents the plurality of the telescopic-module  10  which remain coplanar to the pool bed  124 . 
     As water kinetic-energy  52  passes in the general direction as shown, the kinetic-energy  52  is confined by approach to the toe  98  along the length  106  of the proximal-slope  100 , and continues to be further confined along said proximal-slope  100  to the plateau  104 , causing the wave  114  to break, and create the peel  118  before passing beyond the distal-slope  102 , as shown in  FIG. 10 . Any reef size, orientation, or configuration can be modified or changed from the diagonal-right-reef  92 , the diagonal-left-reef  90 , the vee-reef  88 , or any combination or plurality thereof simply by increasing or decreasing the volume of water contained within the bellows  20  of each of the independently controlled telescopic-module  10 . 
       FIG. 10  is a cross sectional view of the chamber  42  within the confines of the pool bed  124 . The chamber  42  is comprised of a wall  44  thereto communicating with the floor  46  of the chamber  42  for establishing the reef-domain  86 . Furthermore, communicating with the wall  44  of the chamber  42  is a raceway  128 , thereto communicating with a water volume control station (not shown) located outside the confines of the pool. 
     The plurality of the supply-tube  36  bus (not shown) is extended from each of the telescopic-modules  10  to the water volume control station (not shown) beyond the confines of the chamber  42  through the raceway  128 . The raceway  128  also provides for chamber  42  access during construction, and maintenance of the plurality of the telescopic-modules  10 . The water volume supplied or withdrawn to or from each of the telescopic-module  10  is controlled independently by means of a computerized valve system, causing the bellows  20  to extend or retract respectively, thereto causing the telescopic-module  10  to extend or retract respectively. The totality of telescopic-modules  10  within the confines of the chamber  42  are programmed to either remain in part with a predetermined dormant-reef  94 , or are programmed to establish the predetermined size, and shape of a specific reef, or plurality of reefs. 
     The basic reef configurations are shown in  FIG. 6B ,  FIG. 6C , and  FIG. 6D . The predetermined diagonal-right-reef  92  is shown communicating with the dormant-reef  94 . The collar  18  of the plurality of the primary-module  72  extends downward to communicate by means of the base  60  to the chamber  42  floor  46 . Much like the stem of a flower supporting the pedals of the flower, the collar  18  of the primary-module  72  supports the subtended plurality of the secondary-modules  76 . 
     As the kinetic-energy  52  within the water passes over and along the length  106  of the diagonal-right-reef  92 , the elevation and plane of a static-water-line  112  is disrupted by the wave  114  kinetic-energy  52 , thereby creating a dynamic-water-line  122  from the static-water-line  112  to generate a crest  116 . In passing beyond the plateau  104  and along the distal-slope  102  of the diagonal-right-reef  92 , the wave  114  begins the peel  118  and a face  120  of the wave  114  is created, thereto providing a “barrel” or riding surface for the surfer as the wave  114  continues to generate the peel  118  and finally decay toward a beach (not shown). 
     Since other modifications and changes varied to fit particular operating requirements and environments will be apparent to those skilled in the art, the invention is not considered limited to the example chosen for purposes of disclosure, and covers all changes and modifications which do not constitute departures from the true spirit and scope of this invention. 
     Having thus described the invention, what is desired to be protected by Letters Patent is presented in the subsequently appended claims.

Summary:
An open chamber of predetermined size and shape is positioned within a pool bed so as to contain interconnected clusters of interconnected telescopic modules which occupy the chamber area. Each of the telescopic modules is independently extended and retracted in length vertically by the increase or decrease of the volume of water contained within a bellows, establishing in selected telescopic modules a specific reef size, shape, and orientation. When kinetic-energy is introduced upstream from a source, the kinetic-energy within the water passes over the reef, and generates a wave having specific features resulting from the properties of the specific reef configuration.