Pretty soon the truth is apparent, for some reason an enormous tropical crocodile has made the lake his home. Not only that, but the darn thing seems to be diabetic or possibly warm blooded. True, the English description of such monsters would closely match a giant crocodile, but the beast in question would have eaten Saint George's horse, then the unhappy knight. After a few close calls, one too close for a deputy, they decide to trap the monster. You'd be absolutely correct, a few even blaze away with rifles to no effect.
Crocodiles have a difficult time with bite sized divers.
Sexual harassment laws are starting to border on ridiculous. Field work is not a requirement for a degree in Paleontology. It's hard to remember someone in a good way when all you have to cry over is a big toe. I don't need to watch some overweight county sheriff, with bed head and in his underwear, take a leak. Crocodiles like to play with boat anchors.