Underwater Images of Spawning Benches

In northern states, fish managers sometimes use spawning benches to promote the spawning of smallmouth bass. While largemouth bass, rock bass, and sometimes bluegill also use spawning benches, it is the spawning of smallmouth bass that inspired the design.
A spawning bench consists of a four-to-six-foot piece of log sawed lengthwise in half and attached to a concrete block on each end. Spawning benches are therefore sometimes called half logs. Once placed on suitable substrate, the spawning bench provides overhead cover from birds of prey. The concrete blocks on each end protect the nest from raiders on two sides