Patent ID: 7918187
Filing Date: 2011-04-05
Classification: A01K

Abstract:
1. A floating structure for use in an aquarium comprising: a hollow substantially cylindrical shaped elongated body having a substantially flat top side, a bottom side, and sidewalls between the top side and the bottom side defining a tunnel extending through the elongated body, the elongated body also including an open first end and an open second end allowing a fish to swim through the tunnel defined by the elongated body; wherein the hollow substantially cylindrical shaped elongated body is composed of a buoyant material and a weight is embedded in or attached to the bottom side of the elongated body so that a center of gravity for the structure is located at or near the bottom side of the elongated body, so the structure is biased against rolling and the top side remains at least partially above a surface of water when unsupported by surfaces of the aquarium.