Daredevil and all-around adventurer Ricardo Castillo found himself snorkeling off Cuba with his camera, hoping he'd find some sharks to catch with his lens. What he found, however, was quite different...but no less terrifying. Castillo encountered perhaps an even more dangerous species -- monster crocodiles equipped with the strongest bites of any animal on Earth. Little would he know that he'd produce some of the most amazing, close-up images ever seen. We for one, are thankful he did.