User blog comment:GamerNerd i/Piecing Together Plant Ancestry (PvZ2)/@comment-29203923-20160113135832/@comment-26593304-20160115000957

I apologize if this sounds rude, but I'd like to point this out....

"I therefore placed Blover in Pirate Seas to complement Dandelion and inferred that Blover's original purpose was to blow away all the aerial adversaries of the Pirate Seas (Seagulls, Swashbucklers, Parrots)."

That's why. Pirate Seas has more aerial threats than most of the other worlds, and Blover counters air raids. Also, they're on a ship, so maybe Blover could be making wind for them to travel? I don't know, but the air enemy thing is my main inference.