17. Offensive Line — Did you know that sharks can lose up to 30,000 teeth in their lifetime? Great White Sharks have up to 3,000 teeth that are triangular, razor sharp, and up to 3 inches long! As teeth are lost, broken, or worn down, they are replaced by new teeth. A few of those toothy grins would certainly make an offensive line and keep the tooth fairy very busy! Although we hear about it a lot, sharks rarely attack humans UNLESS they are provoked. Great Whites are decreasing in numbers and are rare due to years of being over-hunted.