Ghost of the Lagoon
The main character, Mako, was told that Tupa, the ghost shark, killed Mako's father. Since Tupa killed Mako's father, Mako wants to kill Tupa. One day, Mako goes to get fruits and he encounters Tupa. Tupa chases Mako and Mako tries to hurt Tupa with a harpoon. Mako got Tupa with the harpoon and Tupa died. Mako had gotten his vengeance.