Zombot Sharktronic Sub

 is the boss of Big Wave Beach appearing in Plants vs. Zombies 2: It's About Time. It appears in Day 32. Its design is based on a shark.

Attacks
The randomly performs one of the following actions:
 * It will growl and summon zombies, depending on the phase.
 * It will call three sharks each time to eat plants in water.
 * It will make a whirlwind, attracting all plants and zombies in the two lanes where it is on into its mouth.