PURPOSE:To improve a topic and attention remarkably by selectively opening- closing controlling the open-close means of a water conveyance and the open- close means of a water filling path and conducting the production of the lowering, elevation, etc. of the water level of a specific region in a large scale. CONSTITUTION:A specific region S formed in a hydrosphere 1 is partitioned by partition walls 2, 2 at a specified space W and shielding walls 3, 3 between the mutual end sections of these partition walls 2, 2 to form a shape that the hydrosphere 1 is crossed, and a partition-wall top section 2A is set at a section slightly lower than a shielding-wall top section 3A. When the open-close means V5 of an auxiliary water channel L5 and the on-off valves Vn of a circulating means 9 are opened and the open-close means V4 of the circulating means 9, the open-close means V6 of a communicating path L6 and first-third open-close means V1, V2, V3 are closed, pressed water is fed to nozzles 7 by the operation of a pump P, and water is ejected forcibly from the nozzles 7. Accordingly, each open-close means of the water conveyance and the water filling path is controlled, thus establishing a dynamic show system.
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