The Swamp Where Gator Hides

Under the algae that carpets the swamp, near the duck who paddles in ooze, close to the turtle who takes a snooze . . . hides a gator! Still as a log, only his watchful eyes can be seen. But when gator moves, he really moves! What happens to the duck, the turtle, the egret, the deer, and the many other critters of the swamp when gator makes his move?