- For other uses, see Pirate Seas (disambiguation).
Similar to Plants vs. Zombies 2, planks appeared in this world, but it expanded one more column, so five planks could be present in each lane.
Also, a new feature not found on Plants vs. Zombies 2 was the big mast, which could make the zombies enter from the middle of the lawn similar to Swashbuckler Zombies. Zombies moving on the big mast couldn't be damaged until they get off the mast.
- It was the only area from Plants vs. Zombies 2 to not have a majorly redesigned lawn.