Epidemiologists study outbreaks of diseases, the causes, locations, and how various communities are affected, utilizing relative information to aid in the prevention of future outbreaks. Epidemiologists help to keep the public informed of methods to maintain and improve public health.
Based on these criteria, the smallest known extant shark species appears to be Etmopterus perryi, males of which mature at 16 to 17.5 cm TL and gravid females have been found at 19 to 20 cm TL (Springer & Burgess 1985).
Whale Shark Facts - provided by Steve Fox of Deep Blue Divers The whale shark - latin name: rhincodon typus - is the largest fish in the sea, averaging 9 meters in length. The smallest whale shark seen by Deep Blue Divers in the waters of Utila was approximately 3 meters, the largest approximately 12 meters in length.