SYSTEM FOR OBSERVING UNDERWATER SCENE

PURPOSE:To enable the observation of underwater scene as if the observer above the water level were submerged in water and to enable interesting observation of the natural world in water. CONSTITUTION:Observation chambers 3 are placed around a reduced pressure chamber 2 and the scene in the reduced pressure chamber is observed through observation windows 9. A fish-collection net 4 is extended from the lower end of the reduced pressure chamber 2 to introduce the fish living in natural environment into the fish-collection net 4. The pressure in the reduced pressure chamber is reduced by a vacuum pump 5 to raise the water level in the reduced pressure chamber 2. The observers are allowed to observe the fish, etc., through the windows and a submerged feeling is applied to the observers.