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).
Some sharks have stripes or spots on them which are black or even yellow. The zebra shak is white with black spots. The goblin shark is pink and the swell shark is orange with black spots and epalette shark is orange and has one big black spot near the head surrounded by a band of white. Most sharks are a blue/grey color with some white underneath. A few a brown or rust colored. Some sharks have stripes or spots on them which are black or even yellow. <br /><br /> The zebra shak is white with black spots. The goblin shark is pink and the swell shark is orange with black spots and epalette shark is orange and has one big black spot near the head surrounded by a band of white.