| 摘要 |
<p>An apparatus comprising a display case and a fish tank, the fish tank defining a volume into which water is filled to a water level, the display case being of a suitable size to fit at least partially inside of the fish tank, in which the display case has an open end and a closed end, the open end being located below the water level within the tank with the closed end positioned above the water level of the fish tank with the open end providing a fluid connection between water inside of the case and water in the tank outside of the case, and in which the case contains water at a second water level higher than the water level of the tank, the water being maintained at this higher level by atmospheric pressure acting upon the surface of the water in the tank that is outside of the case. The display case may initially be immersed completely underwater in the fish tank before being raised to its final position full of water. A lifting collar may be provided to assist in raising the display case, and an optional support device may be provided for securing the raised display case in position. The display case may be used to display fish which can swim into the display case above the level of the water in the fish tank.</p> |
