the whale shark is a large planktivourous shark, being the largest planktovourous shark and the largest extant shark. The whale shark is also the larges non mammal vertabrate. The whale shark is the sole living member of its genus and family. The whals shark lives in most of the worlds oceans, being in the atlantic, parts of the pacific and the indian ocean, they dont appear in the southern and artic oceans. Whale sharks have very small teeth since they only eat plankton, their teeth can be less than 6 mm long, and they have 3000 of these small teeth.