Fig. 5. Sample data for two alligators showing timing and intensity of muscle activity as the average integrated EMG activity divided into 100 bins during a dive where the animals rolled hard to the right side (clockwise) and to the left side (counterclockwise). The shaded area in the middle of the graphs represents the period of time during the dive where the animals rolled to the right or the left side respectively. An equal period prior to and following the period of time associated with the roll is shown on either end of the graphs. The first set of graphs shows muscle activity in the right rectus abdominis of alligator 2. The second set of graphs shows muscle activity in the right diaphragmaticus of alligator 5. The third set of graphs shows muscle activity in the left diaphragmaticus of alligator 5. The final set of graphs shows muscle activity in the left diaphragmaticus of alligator 2. For both animals muscle activity can be seen to diminish or stop in left diaphragmaticus during the period of time that the animal was rolling to the right and the opposite is seen as the animal rolls to the left. The same trend can be seen in the right rectus abdominis in alligator 2 and the right diaphragmaticus in alligator 5. At around 66% of the entire cycle the animal is no longer diving down and muscle activity stops for all the muscles shown in both alligators.