A pesky sea creature keeps splashing merchants' ships, and the the water is ruining their cargoes. Something must be done!
This bounty is available to complete after defeating Candelabracadabra on The Tombstone Trail.
The Blubber Bubbler is found nearby the long stretched island southwest of the beach leading to the Skull Mountain, so that means west of the Summerlands continent. Storm-based attacks are particularly helpful in the fight; stay away from water tricks.
Defeat it and you'll complete the bounty hunt, return to the Swift Solutions to claim your reward.