Shreks swamp is filled with fresh ponds teeming with wildlife.. that is until shreks takes a dip in them. Shrek hops into a pond to take a bath, and feels his stomach gurgle. He strains to fart, and a blast of gases carbonated the water making the pond a green hot tub. Shrek smirks and observes everything around him struggle for survival. The wildlife inside get poisoned by the horrible scent and all die. Fish and bubbles floated up side by side. Birds, insects, and plants all wilted and fell from the sky. Shreks then takes all of the fish to eat them for dinner. And picks up the birds to roast them up top a fire. He gets out of the now polluted lake with a smile of success on his face.