This colorful parrotfish living amongst the reef in Belize, flashed me a giant smile, showing me some bright white teeth. They use these teeth to scrape algae off corals and rocks, thus preventing algae overgrowth in the reef. This harsh treatment on their teeth as they eat means that they grow continuously throughout their life. I must say that it is a totally different felling getting a toothy smile from a parrotfish compared to a toothy grin from a shark!