Submerged Target, See-Saw
     The See-Saw type of submerged target consists of two or more bubble capture targets joined together by a connecting element of specific length. During play, the target assembly is submerged in water and emptied of air so that the assembly sinks. Air from impacting vortex rings is collected by each target. The target assembly will rise toward the water surface as air is collected and buoyancy increases. If one target collects more air than the other target the assembly will begin to tip from horizontal to vertical. If the target tips too far toward vertical then the collected air will escape and the target will sink back to the bottom of the pool. One player's objective is to get the assembly to the water surface. The other player's objective is to tip the assembly and send it back to the bottom.