Matamata turtle (Chelys fimbriatus) - The bizarre South American matamata is superbly adapted to its sedentary aquatic lifestyle. The large, irregular flanges on its head and neck camouflage it extremely well in the water, while its long pointed snout enables it to reach the surface for air while staying in place. It is a sit-and-wait predator, engulfing fish that swim too close to its waiting jaws.