NOVELTY - The micro-spike algae harvesting and biofuel extraction system comprises a rigid framework (26), a micro-spike board (24) held by the framework at an inclined angle relative to a horizontal plane, and a sprinkling system (22) arranged for dispersing an algal solution of algae cells from a selected height above the micro-spike board onto the array of miniature spikes for puncturing the algae cells to release a biofuel contained in the algae cells. The micro-spike board forms a planar substrate, and has an array of miniature spikes supported on the substrate.    USE - The system is useful for harvesting micro-spike algae and extracting biofuel (claimed).    ADVANTAGE - The system is capable of simply, energy efficiently, economically and rapidly harvesting micro-spike algae and extracting biofuel with high yield and without using any expensive equipments and damages.    DETAILED DESCRIPTION - The micro-spike algae harvesting and biofuel extraction system comprises a rigid framework (26), a micro-spike board (24) held by the framework at an inclined angle relative to a horizontal plane, and a sprinkling system (22) arranged for dispersing an algal solution of algae cells from a selected height above the micro-spike board onto the array of miniature spikes for puncturing the algae cells to release a biofuel contained in the algae cells. The micro-spike board forms a planar substrate, and has an array of miniature spikes supported on the substrate. Each spike of the array of spikes has a conic shape, and is fixed on the substrate at a selected angle such that each spike is pointed in upwards. The rigid framework comprises a tower (12). The micro-spike board is supported by the tower. The sprinkling system is: supported by the tower above the microspike board; and spaced above the micro-spike board by a distance of 20-30 feet. Each spike of the array of spikes has a center axis disposed at the selected angle relative to the substrate. The micro-spike board has an upper end and lower end. Each spike in the array of spikes is inclined more towards the upper end than if the spike is parallel to a vertical plane intersecting the microspike board in a horizontal line. An angle at which the framework is inclined relative to a horizontal plane, is 15-30 degrees . Each spike has a center axis disposed at an angle relative to the substrate of approximately 60-75 degrees , and forms the shape of an oblique cone relative to the substrate. The sprinkling system has drip nozzles for dispersing the algal solution onto the array of miniature spikes, and spray nozzles for spraying the algal solution onto the array of miniature spikes under pressure. Each spike has an apex, an upper side facing the upper end, a lower side facing the lower end, and a base. The upper side extends from the apex to the substrate at an upper intersection point, and has a height of 15-90 mu m and a width of 10-71 mu m. The lower side: is located opposite to the upper side; extends from the apex to the substrate at a lower intersection point below the upper intersection point; and has a height of 17-100 mu m. The base has a width extending between the upper and lower intersection points. The system further comprises a holding tank (62) for catching the algal solution as the solution slides off of the micro-spike board.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a micro-spike algae harvesting system.    Tower (12)    Sprinkling system (22)    Micro-spike board (24)    Rigid framework (26)    Holding tank. (62)