Circle swimming can be performed by 2 or more people swimming in circular motion and keeping to the right
Splitting the lane is when two participants share the lane with each participant only using one side of the lane
Lap Pool Usage
There may be times during the swim team practice that the swim team will have use of seven out of the eight lanes. One lane will remain reserved at all times for lap swim. However, if at any time three swimmers occupy the lap swimmers' lane and a fourth swimmer arrives on deck to swim laps, the swim team will vacate the seventh lane.