Figure 1.Caenorhabditis elegans employs distinct motor patterns to crawl on land and to swim in water. Time lapse montage showing the characteristic sinusoidal shape of worm as it crawls toward a 3 μl drop of NGM buffer (left). Once it enters the drop it first abandons crawling and then begin swimming during which it alternates between dorsal and ventral “C” shapes (middle). After the liquid is absorbed by the agar, worms cease swimming and begin emerging from the remaining puddle, resuming crawling once they completely exit it (right).