River MonstersOver ten feet long, it weighs in at nearly a quarter of a ton. Covering its back are armoured plates made of bone. Five hundred stiletto sharp teeth line its long crocodilian jaws. It's a prehistoric beast of staggering proportions; a fearsome creature from the time of the dinosaurs. But the Alligator Gar, an air breathing survivor from the Cretaceous period, is still with us today, patrolling inland rivers, hunting in murky waters shared by human