Aquatic fauna e.g. fish, visualization device for e.g. pond, has bell shaped container made up of glass, whose bottom wall is cut into specific form for ensuring communication between inside of container and surrounding water medium

摘要

The device has a bell shaped container made up of glass or transparent material maintained above a water level (2). The container is closed towards top and opened towards bottom. The bottom wall of the container is cut into specific form for supporting the container in a floor of pool and ensuring communication between inside of the container and surrounding water medium.