Zombot Sharktronic Sub

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

Attacks
The randomly performs one of the following actions:
 * It will summon zombies, depending on the phase.
 * It will summon sharks to eat plants that are in the water.
 * It will activate the mouth turbines, which pull plants to it and destroy them.

Trivia

 * It is the second Zombot to be based on an animal, while the first is Zombot Dark Dragon.
 * It is also the second Zombot that is not four-legged.
 * However, it is unknown if the Zombot Dark Dragon is four-legged or not.
 * If the player tries to plant a Lily Pad or Guacodile, a message appears and says: "You can't plant on school of sharks".
 * This is the second Zomboss battle that has a premium plant in it - Homing Thistle, while Zombot Dark Dragon being the first that has Pea-nut.
 * When a Tangle Kelp gets sucked up by Zombot Sharktronic Sub's mouth turbine, the turbine will get stuck and stunned.
 * It loses its teeth when defeated.
 * Plants that are entangled by octopi cannot be sucked in by Zombot Sharktonic Sub's mouth turbine.
 * Its full body cannot be seen. This is shared with the Zombot Dark Dragon. However, its full body is seen on the Boss Battle tile.
 * While it is moving underwater, it cannot be damaged.
 * Its opening theme is same as Ancient Egypt's.