Abstract: A tubular member of predetermined length is arranged in an ornamental fasion, such as a helix disposed in conical or cylindrical configuration or as a festooned member, and is adapted to contain a first fluid, such as water, and to receive a second fluid, such as air, which is lighter than water and which passes through the first fluid in pockets separated one from the other. Seat defining means are carried by the tubular member as either a continuous or discontinuous strip and so as to receive illumination means which when illuminated coacts with the first fluid and the second fluid, as it passes through the first fluid, to provide a pleasingly aesthetic effect. A conduit member may also be carried by said tubular member to act as a return for the second fluid; and suitable pump means are provided to inject said second fluid into said first fluid. If desired particles of reflecting material may be dispersed in said first fluid.