Shark Fin

The Shark Fin is an item given by the Shark Fin Salesman. It is not required to complete the quest of Shark Tooth Island and is an optional item to obtain. When you put it on, it will appear on your back. There are also different colored versions on some costumes, such as the hammerhead shark.

Trivia

 * This is the first optional item to be created in Poptropica, the second being the Viking Suit on Time Tangled Island.